diff --git a/.typos.toml b/.typos.toml
index ab4d9769e4..4fcc006718 100644
--- a/.typos.toml
+++ b/.typos.toml
@@ -80,6 +80,8 @@ have_2nd = "have_2nd"
 ot1 = "ot1"
 ot2 = "ot2"
 uses_seh = "uses_seh"
+ect0 = "ect0"
+ect1 = "ect1"
 
 [default.extend-words]
 caf = "caf"
diff --git a/CHANGES b/CHANGES
index a6edddddbf..4f1ab9f7b0 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,50 @@
+7.2.0-rc1.7 | 2025-05-05 11:17:50 -0700
+
+  * QUIC: Extract reset_crypto() function (Arne Welzel, Corelight)
+
+    (cherry picked from commit 50ac8d1468603c710e109f1c050b3966dd91deda)
+
+  * QUIC: Rename ConnectionIDInfo to Context (Arne Welzel, Corelight)
+
+    (cherry picked from commit 50ac8d1468603c710e109f1c050b3966dd91deda)
+
+  * QUIC: Switch initial_destination_conn_id to optional (Arne Welzel, Corelight)
+
+    (cherry picked from commit 50ac8d1468603c710e109f1c050b3966dd91deda)
+
+  * QUIC: Use initial destination conn_id for decryption (Arne Welzel, Corelight)
+
+    Ensure the client side also uses the initial destination connection ID
+    for decryption purposes instead of the one from the current long header
+    packet. PCAP from local WiFi hotspot.
+
+    (cherry picked from commit 50ac8d1468603c710e109f1c050b3966dd91deda)
+
+  * QUIC: Handle CRYPTO frames across multiple INITIAL packets (Arne Welzel, Corelight)
+
+    Instead of sending the accumulated CRYPTO frames after processing an
+    INITIAL packet, add logic to determine the total length of the TLS
+    Client or Server Hello (by peeking into the first 4 byte). Once all
+    CRYPTO frames have arrived, flush the reassembled data to the TLS
+    analyzer at once.
+
+    (cherry picked from commit 50ac8d1468603c710e109f1c050b3966dd91deda)
+
+  * QUIC: Do not consume EncryptedLongPacketPayload (Arne Welzel, Corelight)
+
+    The payload is already consumed within the InitialPacket unit. Consuming
+    it again resulted in UDP datagrams with multiple packets to ignore
+    the remaining packets in the same UDP datagram. The baseline changes
+    showing I being followed by a new H indicates that the INITIAL packet
+    was followed by a HANDSHAKE packet, but previously Zeek discarded
+    these.
+
+    (cherry picked from commit 50ac8d1468603c710e109f1c050b3966dd91deda)
+
+  * QUIC: Fix ACK frame parsing (Arne Welzel, Corelight)
+
+    (cherry picked from commit 50ac8d1468603c710e109f1c050b3966dd91deda)
+
 7.2.0-rc1.6 | 2025-04-29 17:51:10 -0700
 
   * fixed incorrect ZAM optimization of expressions seen in single-statement inlined functions (Vern Paxson, Corelight)
diff --git a/VERSION b/VERSION
index 71e0ba503c..c724575e52 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-7.2.0-rc1.6
+7.2.0-rc1.7
diff --git a/src/analyzer/protocol/quic/QUIC.spicy b/src/analyzer/protocol/quic/QUIC.spicy
index 0d6064d4c6..dbac41d761 100644
--- a/src/analyzer/protocol/quic/QUIC.spicy
+++ b/src/analyzer/protocol/quic/QUIC.spicy
@@ -17,27 +17,104 @@ public function decrypt_crypto_payload(
 ): bytes &cxxname="QUIC_decrypt_crypto_payload";
 
 
-##############
-## Context - tracked in one connection
-##############
-
 # Can we decrypt?
-function can_decrypt(long_header: LongHeaderPacket, context: ConnectionIDInfo, is_client: bool): bool {
+function can_decrypt(long_header: LongHeaderPacket, context: Context, crypto: CryptoSinkUnit&): bool {
 
   if ( ! long_header.is_initial )
     return False;
 
-  if ( is_client )
-    return ! context.client_initial_processed;
+  if ( crypto == Null )
+    return False;
 
-  # This is the responder, can only decrypt if we have an initial
-  # destination_id from the client
-  return context.client_initial_processed
-          && |context.initial_destination_conn_id| > 0
-          && ! context.server_initial_processed;
+  # Can only decrypt the responder if we've seen the initial destination conn id.
+  if ( ! crypto.is_orig && ! context.initial_destination_conn_id )
+    return False;
+
+  # Only attempt decryption if we haven't flushed some SSL data yet.
+  return ! crypto.finished;
 }
 
-type ConnectionIDInfo = struct {
+function reset_crypto(context: Context&) {
+  # Recreate all the crypto state on the next %init of Packet.
+  zeek::protocol_handle_close(context.ssl_handle);
+  unset context.ssl_handle;
+  context.client_crypto = Null;
+  context.server_crypto = Null;
+  context.client_sink = Null;
+  context.server_sink = Null;
+  context.initial_destination_conn_id = Null;
+}
+
+# This unit is connected with the server and client sinks receiving
+# CRYPTO frames and forwards data to the SSL handle in the context.
+type CryptoSinkUnit = unit(is_orig: bool, context: Context&) {
+  var buffered: bytes;
+  var length: uint32 = 0;
+  var is_orig: bool = is_orig;
+  var finished: bool;
+
+  # The first 4 bytes of crypto data contain the expected tag and a
+  # 24bit length from the TLS HandshakeMessage. Extract the length
+  # so we can determine when all CRYPTO frames have arrived.
+  #
+  # https://datatracker.ietf.org/doc/html/rfc8446#section-4
+  #
+  #  struct {
+  #    HandshakeType msg_type;    /* handshake type */
+  #    uint24 length;             /* remaining bytes in message */
+  #    ...
+  #
+  : uint8 {
+    self.buffered += $$;
+  }
+
+  len: uint8[3] {
+    self.length = (cast<uint32>($$[0]) << 16) + (cast<uint32>($$[1]) << 8) + cast<uint32>($$[2]) + 4;
+
+    self.buffered += $$[0];
+    self.buffered += $$[1];
+    self.buffered += $$[2];
+  }
+
+  : void &requires=(self.length <= 2**14 + 256) {  # The length MUST NOT exceed 2^14 + 256 bytes (RFC 8446)
+
+    # The client or server hello data is forwarded to the SSL analyzer as a
+    # TLSPlaintext record with legacy_record_version set to \x03\x03 (1.3).
+    #
+    # enum {
+    #     invalid(0),
+    #     change_cipher_spec(20),
+    #     alert(21),
+    #     handshake(22),
+    #     application_data(23),
+    #     (255)
+    # } ContentType;
+    #
+    # struct {
+    #     ContentType type;
+    #     ProtocolVersion legacy_record_version;
+    #     uint16 length;
+    #     opaque fragment[TLSPlaintext.length];
+    # } TLSPlaintext;
+    #
+    # https://datatracker.ietf.org/doc/html/rfc8446#section-5.1
+    local length_bytes = pack(cast<uint16>(self.length), spicy::ByteOrder::Big);
+    zeek::protocol_data_in(is_orig, b"\x16\x03\x03" + length_bytes + self.buffered, context.ssl_handle);
+  }
+
+  : bytes &chunked &size=(self.length - 4) {
+    zeek::protocol_data_in(is_orig, $$, context.ssl_handle);
+  }
+
+  : void {
+    self.finished = True;
+  }
+};
+
+##############
+## Context
+##############
+type Context = struct {
   client_cid_len: uint8;
   server_cid_len: uint8;
 
@@ -46,26 +123,13 @@ type ConnectionIDInfo = struct {
   # will make life miserable.
   #
   # https://quicwg.org/base-drafts/rfc9001.html#appendix-A
-  initial_destination_conn_id: bytes;
+  initial_destination_conn_id: optional<bytes>;
 
-  # Currently, this analyzer assumes that ClientHello
-  # and ServerHello fit into the first INITIAL packet (and
-  # that there is only one that we're interested in.
-  #
-  # But minimally the following section sounds like this might not
-  # hold in general and the Wireshark has samples showing
-  # the handshake spanning across more than two INITIAL packets.
-  # (quic-fragmented-handshakes.pcapng.gz)
-  #
-  # https://datatracker.ietf.org/doc/html/rfc9001#section-4.3
-  #
-  # Possible fix is to buffer up all CRYPTO frames across multiple
-  # INITIAL packets until we see a non-INITIAL frame.
-  #
-  # We also rely heavily on getting originator and responder right.
-  #
-  client_initial_processed: bool;
-  server_initial_processed: bool;
+  # Track crypto state.
+  client_crypto: CryptoSinkUnit&;
+  client_sink: sink&;
+  server_crypto: CryptoSinkUnit&;
+  server_sink: sink&;
 
   ssl_handle: zeek::ProtocolHandle &optional;
 };
@@ -272,16 +336,28 @@ public type LongHeaderPacket = unit {
 };
 
 # A QUIC Frame.
-public type Frame = unit(header: LongHeaderPacket, from_client: bool, crypto_sink: sink&) {
+public type Frame = unit(header: LongHeaderPacket, from_client: bool, crypto: CryptoSinkUnit, crypto_sink: sink&) {
   frame_type : uint8 &convert=cast<FrameType>($$);
 
   # TODO: add other FrameTypes as well
   switch ( self.frame_type ) {
-    FrameType::ACK1 -> a: ACKPayload;
-    FrameType::ACK2 -> b: ACKPayload;
+    FrameType::ACK1 -> a: ACKPayload(FrameType::ACK1);
+    FrameType::ACK2 -> b: ACKPayload(FrameType::ACK2);
     FrameType::CRYPTO -> c: CRYPTOPayload(from_client) {
       # Have the sink re-assemble potentially out-of-order cryptodata
       crypto_sink.write(self.c.cryptodata, self.c.offset.result_);
+
+      # If the crypto unit has determined a valid length, ensure we
+      # don't attempt to write more bytes into the sink. If it doesn't,
+      # use 2000 bytes as an arbitrary limit required to observe the
+      # length of the contained Client Hello or Server Hello.
+      if ( crypto.length > 0 ) {
+        if ( |crypto_sink| > crypto.length )
+          throw "too much crypto data received %s > %s" % ( |crypto_sink|, crypto.length);
+      } else {
+        if ( |crypto_sink| > 2000 )
+          throw "too much crypto data without length received %s" % |crypto_sink|;
+      }
     }
     FrameType::CONNECTION_CLOSE1 -> : ConnectionClosePayload(header);
     FrameType::PADDING -> : skip /\x00*/;  # eat the padding
@@ -298,11 +374,26 @@ type CRYPTOPayload = unit(from_client: bool) {
   cryptodata: bytes &size=self.length.result_;
 };
 
-type ACKPayload = unit {
+# https://datatracker.ietf.org/doc/html/rfc9000#ack-ranges
+type ACKRange = unit {
+  gap: VariableLengthInteger;
+  ack_range_length: VariableLengthInteger;
+};
+
+type ACKECNCounts = unit {
+  ect0: VariableLengthInteger;
+  ect1: VariableLengthInteger;
+  ecn_ce: VariableLengthInteger;
+};
+
+# https://datatracker.ietf.org/doc/html/rfc9000#name-ack-frames
+type ACKPayload = unit(frame_type: FrameType) {
   latest_ack: VariableLengthInteger;
   ack_delay: VariableLengthInteger;
   ack_range_count: VariableLengthInteger;
   first_ack_range: VariableLengthInteger;
+  ack_ranges: ACKRange[self.ack_range_count.result_];
+  ecn_counts: ACKECNCounts if(frame_type == FrameType::ACK2);
 };
 
 type ConnectionClosePayload = unit(header: LongHeaderPacket) {
@@ -393,35 +484,18 @@ public type ShortPacketPayload = unit {
   payload: skip bytes &eod;
 };
 
-# TODO: investigate whether we can do something useful with this
-public type EncryptedLongPacketPayload = unit {
-  payload: skip bytes &eod;
-};
-
-# Buffer all crypto messages (which might be fragmented and unordered)
-# into the following unit.
-type CryptoBuffer = unit() {
-
-  var buffered: bytes;
-
-  : bytes &chunked &eod {
-    self.buffered += $$;
-    # print "crypto_buffer got data", |$$|, |self.buffered|;
-  }
-};
-
 ##############
 # QUIC packet parsing
 #
 # A UDP datagram contains one or more QUIC packets.
 ##############
-type Packet = unit(from_client: bool, context: ConnectionIDInfo&) {
+type Packet = unit(from_client: bool, context: Context&) {
   var decrypted_data: bytes;
   var packet_size: uint64 = 0;
   var start: iterator<stream>;
 
-  sink crypto_sink;
-  var crypto_buffer: CryptoBuffer&;
+  var crypto: CryptoSinkUnit&;
+  var crypto_sink: sink&;
 
   # Attach an SSL analyzer to this connection once.
   on %init {
@@ -430,6 +504,26 @@ type Packet = unit(from_client: bool, context: ConnectionIDInfo&) {
     }
 
     self.start = self.input();
+
+    # Initialize crypto state in context for both sides if not already done.
+    if ( context.client_crypto == Null ) {
+      assert ! context.server_crypto;
+      context.client_crypto = new CryptoSinkUnit(True, context);
+      context.client_sink = new sink;
+      context.client_sink.connect(context.client_crypto);
+
+      context.server_crypto = new CryptoSinkUnit(False, context);
+      context.server_sink = new sink;
+      context.server_sink.connect(context.server_crypto);
+    }
+
+    if ( from_client ) {
+      self.crypto = context.client_crypto;
+      self.crypto_sink = context.client_sink;
+    } else {
+      self.crypto = context.server_crypto;
+      self.crypto_sink = context.server_sink;
+    }
   }
 
   # Peek into the first byte and determine the header type.
@@ -443,7 +537,6 @@ type Packet = unit(from_client: bool, context: ConnectionIDInfo&) {
     self.set_input(self.start);  # rewind
   }
 
-
   # Depending on the header, parse it and update the src/dest ConnectionID's
   switch ( self.first_byte.header_form ) {
     HeaderForm::SHORT -> short_header: ShortHeader(context.client_cid_len);
@@ -453,19 +546,16 @@ type Packet = unit(from_client: bool, context: ConnectionIDInfo&) {
         # If we see a retry packet from the responder, reset the decryption
         # context such that the next DCID from the client is used for decryption.
         if ( self.long_header.is_retry ) {
-          context.client_initial_processed = False;
-          context.server_initial_processed = False;
-          context.initial_destination_conn_id = b"";
+          reset_crypto(context);
 
-          # Allow re-opening the SSL analyzer the next time around.
-          zeek::protocol_handle_close(context.ssl_handle);
-          unset context.ssl_handle;
+          self.crypto = Null;
+          self.crypto_sink = Null;
         }
      }
   };
 
   : void {
-      if (self?.long_header && can_decrypt(self.long_header, context, from_client))
+      if ( self?.long_header && can_decrypt(self.long_header, context, self.crypto ) )
           # If we have parsed an initial packet that we can decrypt the payload,
           # determine the size to store into a buffer.
           self.packet_size = self.offset();
@@ -473,30 +563,29 @@ type Packet = unit(from_client: bool, context: ConnectionIDInfo&) {
 
   # Buffer the whole packet if we determined we have a chance to decrypt.
   packet_data: bytes &parse-at=self.start &size=self.packet_size if ( self.packet_size > 0 ) {
-    self.crypto_buffer = new CryptoBuffer();
-    self.crypto_sink.connect(self.crypto_buffer);
 
     if ( from_client ) {
       context.server_cid_len = self.long_header.dest_conn_id_len;
       context.client_cid_len = self.long_header.src_conn_id_len;
 
+      # This is the first INITIAL packet we attempt to decrypt and it is
+      # coming from the client. Use its destination connection ID for
+      # decryption purposes.
+      if ( ! context.initial_destination_conn_id ) {
+        context.initial_destination_conn_id = self.long_header.dest_conn_id;
+      }
+
       # This means that here, we can try to decrypt the initial packet!
       # All data is accessible via the `long_header` unit
       self.decrypted_data = decrypt_crypto_payload(
         self.long_header.version,
         self.packet_data,
-        self.long_header.dest_conn_id,
+        *context.initial_destination_conn_id,
         self.long_header.encrypted_offset,
         self.long_header.payload_length,
         from_client
       );
 
-      # Assuming that the client set up the connection, this can be considered the first
-      # received Initial from the client. So disable change of ConnectionID's afterwards
-      if ( |context.initial_destination_conn_id| == 0 ) {
-        context.initial_destination_conn_id = self.long_header.dest_conn_id;
-      }
-
     } else {
       context.server_cid_len = self.long_header.src_conn_id_len;
       context.client_cid_len = self.long_header.dest_conn_id_len;
@@ -504,7 +593,7 @@ type Packet = unit(from_client: bool, context: ConnectionIDInfo&) {
       self.decrypted_data = decrypt_crypto_payload(
         self.long_header.version,
         self.packet_data,
-        context.initial_destination_conn_id,
+        *context.initial_destination_conn_id,
         self.long_header.encrypted_offset,
         self.long_header.payload_length,
         from_client
@@ -521,51 +610,24 @@ type Packet = unit(from_client: bool, context: ConnectionIDInfo&) {
     spicy::accept_input();
   }
 
-  # Depending on the type of header and whether we were able to decrypt
-  # some of it, parse the remaining payload.
+  # If this packet has a SHORT header, consume until &eod, there's nothing
+  # we can do with it anyhow.
   : ShortPacketPayload if (self.first_byte.header_form == HeaderForm::SHORT);
-  : EncryptedLongPacketPayload if (self.first_byte.header_form == HeaderForm::LONG && |self.decrypted_data| == 0);
 
   # If this was packet with a long header and decrypted data exists, attempt
   # to parse the plain QUIC frames from it.
-  frames: Frame(self.long_header, from_client, self.crypto_sink)[] &parse-from=self.decrypted_data if (self.first_byte.header_form == HeaderForm::LONG && |self.decrypted_data| > 0);
-
-  # Once the Packet is fully parsed, pass the accumulated CRYPTO frames
-  # to the SSL analyzer as handshake data.
-  on %done {
-    # print "packet done", zeek::is_orig(), self.first_byte.header_form, |self.decrypted_data|;
-
-    if ( self.crypto_buffer != Null && |self.crypto_buffer.buffered| > 0 ) {
-      local handshake_data = self.crypto_buffer.buffered;
-
-      # The data is passed to the SSL analyzer as part of a HANDSHAKE (0x16) message with TLS1.3 (\x03\x03).
-      # The 2 length bytes are also passed, followed by the actual CRYPTO blob which contains a CLIENT HELLO or SERVER HELLO
-      local length_bytes = pack(cast<uint16>(|handshake_data|), spicy::ByteOrder::Big);
-      zeek::protocol_data_in(
-        from_client
-        , b"\x16\x03\x03" + length_bytes + handshake_data
-        , context.ssl_handle
-      );
-
-      # Stop decryption attempts after processing the very first INITIAL
-      # INITIAL packet for which we forwarded data to the SSL analyzer.
-      if ( from_client )
-        context.client_initial_processed = True;
-      else
-        context.server_initial_processed = True;
-    }
-  }
+  frames: Frame(self.long_header, from_client, self.crypto, self.crypto_sink)[] &parse-from=self.decrypted_data if (self.first_byte.header_form == HeaderForm::LONG && |self.decrypted_data| > 0);
 };
 
 ##############
 # Entrypoints
 ##############
 public type RequestFrame = unit {
-  %context = ConnectionIDInfo;
+  %context = Context;
   : Packet(True, self.context())[];
 };
 
 public type ResponseFrame = unit {
-  %context = ConnectionIDInfo;
+  %context = Context;
   : Packet(False, self.context())[];
 };
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.curl-http3/quic.log b/testing/btest/Baseline/scripts.base.protocols.quic.curl-http3/quic.log
index 29f634519b..9a2bc00efd 100644
--- a/testing/btest/Baseline/scripts.base.protocols.quic.curl-http3/quic.log
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.curl-http3/quic.log
@@ -7,5 +7,5 @@
 #open XXXX-XX-XX-XX-XX-XX
 #fields	ts	uid	id.orig_h	id.orig_p	id.resp_h	id.resp_p	version	client_initial_dcid	client_scid	server_scid	server_name	client_protocol	history
 #types	time	string	addr	port	addr	port	string	string	string	string	string	string	string
-XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	172.17.0.2	34347	64.233.166.94	443	1	815d62c70884f4b51e8ccadd5beed372	e5ec6b26584229be98a164349ae910351c40d10b	c15d62c70884f4b5	www.google.de	h3	ISishIhHhhH
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	172.17.0.2	34347	64.233.166.94	443	1	815d62c70884f4b51e8ccadd5beed372	e5ec6b26584229be98a164349ae910351c40d10b	c15d62c70884f4b5	www.google.de	h3	ISishIHhHhhH
 #close XXXX-XX-XX-XX-XX-XX
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.decrypt-fail-google-de-51833/conn.log.cut b/testing/btest/Baseline/scripts.base.protocols.quic.decrypt-fail-google-de-51833/conn.log.cut
new file mode 100644
index 0000000000..46d72b1541
--- /dev/null
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.decrypt-fail-google-de-51833/conn.log.cut
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+ts	uid	history	service
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	Dd	quic,ssl
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.decrypt-fail-google-de-51833/quic.log.cut b/testing/btest/Baseline/scripts.base.protocols.quic.decrypt-fail-google-de-51833/quic.log.cut
new file mode 100644
index 0000000000..6199e7117b
--- /dev/null
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.decrypt-fail-google-de-51833/quic.log.cut
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+ts	uid	server_name	history
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	www.google.de	ZZZIiIIIISiIIIiiiiiishIIHH
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.decrypt-fail-google-de-51833/ssl.log.cut b/testing/btest/Baseline/scripts.base.protocols.quic.decrypt-fail-google-de-51833/ssl.log.cut
new file mode 100644
index 0000000000..e72550284a
--- /dev/null
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.decrypt-fail-google-de-51833/ssl.log.cut
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+ts	uid	version	cipher	curve	server_name	resumed	last_alert	next_protocol	established	ssl_history
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	TLSv13	TLS_AES_128_GCM_SHA256	X25519MLKEM768	www.google.de	T	-	-	F	Cs
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.events/out b/testing/btest/Baseline/scripts.base.protocols.quic.events/out
index e377ed39d4..6178826346 100644
--- a/testing/btest/Baseline/scripts.base.protocols.quic.events/out
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.events/out
@@ -47,3 +47,4 @@ zerortt.pcap
 1.0, zero_rtt_packet, T, CtPZjS20MLrsMUOJi2, 1, 15ae5e5e4962163f410b5529fc125bbc, 
 1.0, initial_packet, CtPZjS20MLrsMUOJi2, T, 1, 3ec82f67, 
 1.0, handshake_packet, T, CtPZjS20MLrsMUOJi2, 1, 3ec82f67, 
+1.0, handshake_packet, T, CtPZjS20MLrsMUOJi2, 1, 3ec82f67, 
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.interop.quic-go_quic-go.zerortt/quic.log b/testing/btest/Baseline/scripts.base.protocols.quic.interop.quic-go_quic-go.zerortt/quic.log
index f2f8098294..b09e3ac209 100644
--- a/testing/btest/Baseline/scripts.base.protocols.quic.interop.quic-go_quic-go.zerortt/quic.log
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.interop.quic-go_quic-go.zerortt/quic.log
@@ -7,6 +7,6 @@
 #open XXXX-XX-XX-XX-XX-XX
 #fields	ts	uid	id.orig_h	id.orig_p	id.resp_h	id.resp_p	version	client_initial_dcid	client_scid	server_scid	server_name	client_protocol	history
 #types	time	string	addr	port	addr	port	string	string	string	string	string	string	string
-1.000000	CtPZjS20MLrsMUOJi2	193.167.0.100	49394	193.167.100.100	443	1	15ae5e5e4962163f410b5529fc125bbc	(empty)	e483a751	server4:443	hq-interop	ISZishZZZZZZZZZZZZZZZZZZZZZZZZZZZIH
+1.000000	CtPZjS20MLrsMUOJi2	193.167.0.100	49394	193.167.100.100	443	1	15ae5e5e4962163f410b5529fc125bbc	(empty)	e483a751	server4:443	hq-interop	ISZishZZZZZZZZZZZZZZZZZZZZZZZZZZZIHH
 1.000000	C4J4Th3PJpwUYZZ6gc	193.167.0.100	60492	193.167.100.100	443	1	b7c7841c64883e3261d840	(empty)	8d2041ac	server4:443	hq-interop	ISishhIH
 #close XXXX-XX-XX-XX-XX-XX
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto-only-initial/conn.log.cut b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto-only-initial/conn.log.cut
new file mode 100644
index 0000000000..06445c01a5
--- /dev/null
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto-only-initial/conn.log.cut
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+ts	uid	history	service
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	D	quic,ssl
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto-only-initial/quic.log.cut b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto-only-initial/quic.log.cut
new file mode 100644
index 0000000000..13f1e1fa45
--- /dev/null
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto-only-initial/quic.log.cut
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+ts	uid	server_name	history
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	googleads.g.doubleclick.net	IIIS
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto-only-initial/ssl.log.cut b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto-only-initial/ssl.log.cut
new file mode 100644
index 0000000000..1929143aa1
--- /dev/null
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto-only-initial/ssl.log.cut
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+ts	uid	version	cipher	curve	server_name	resumed	last_alert	next_protocol	established	ssl_history
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	-	-	-	googleads.g.doubleclick.net	F	-	-	F	C
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto/conn.log.cut b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto/conn.log.cut
new file mode 100644
index 0000000000..46d72b1541
--- /dev/null
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto/conn.log.cut
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+ts	uid	history	service
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	Dd	quic,ssl
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto/quic.log.cut b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto/quic.log.cut
new file mode 100644
index 0000000000..b8cd8237eb
--- /dev/null
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto/quic.log.cut
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+ts	uid	server_name	history
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	googleads.g.doubleclick.net	IIISZZZiIiIIIIIIZ
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto/ssl.log.cut b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto/ssl.log.cut
new file mode 100644
index 0000000000..1929143aa1
--- /dev/null
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.multiple-initial-fragmented-crypto/ssl.log.cut
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+ts	uid	version	cipher	curve	server_name	resumed	last_alert	next_protocol	established	ssl_history
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	-	-	-	googleads.g.doubleclick.net	F	-	-	F	C
diff --git a/testing/btest/Baseline/scripts.base.protocols.quic.quicv2-echo-443/quic.log b/testing/btest/Baseline/scripts.base.protocols.quic.quicv2-echo-443/quic.log
index a460e7fec8..1d3ecea7b2 100644
--- a/testing/btest/Baseline/scripts.base.protocols.quic.quicv2-echo-443/quic.log
+++ b/testing/btest/Baseline/scripts.base.protocols.quic.quicv2-echo-443/quic.log
@@ -7,5 +7,5 @@
 #open XXXX-XX-XX-XX-XX-XX
 #fields	ts	uid	id.orig_h	id.orig_p	id.resp_h	id.resp_p	version	client_initial_dcid	client_scid	server_scid	server_name	client_protocol	history
 #types	time	string	addr	port	addr	port	string	string	string	string	string	string	string
-XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	127.0.0.1	49320	127.0.0.1	443	quicv2	fa603212c8688817af3d3238735bc7	(empty)	b168b5cc	localhost	quic-echo-example	ISIIishIH
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	127.0.0.1	49320	127.0.0.1	443	quicv2	fa603212c8688817af3d3238735bc7	(empty)	b168b5cc	localhost	quic-echo-example	ISIIishIHH
 #close XXXX-XX-XX-XX-XX-XX
diff --git a/testing/btest/Traces/quic/quic-decrypt-fail-google-de-51833.pcap b/testing/btest/Traces/quic/quic-decrypt-fail-google-de-51833.pcap
new file mode 100644
index 0000000000..cc7d2fec1a
Binary files /dev/null and b/testing/btest/Traces/quic/quic-decrypt-fail-google-de-51833.pcap differ
diff --git a/testing/btest/Traces/quic/quic-multiple-initial-fragmented-crypto-only-initial.pcap b/testing/btest/Traces/quic/quic-multiple-initial-fragmented-crypto-only-initial.pcap
new file mode 100644
index 0000000000..aecc0c7eb9
Binary files /dev/null and b/testing/btest/Traces/quic/quic-multiple-initial-fragmented-crypto-only-initial.pcap differ
diff --git a/testing/btest/Traces/quic/quic-multiple-initial-fragmented-crypto.pcap b/testing/btest/Traces/quic/quic-multiple-initial-fragmented-crypto.pcap
new file mode 100644
index 0000000000..d4cad58756
Binary files /dev/null and b/testing/btest/Traces/quic/quic-multiple-initial-fragmented-crypto.pcap differ
diff --git a/testing/btest/scripts/base/protocols/quic/decrypt-fail-google-de-51833.zeek b/testing/btest/scripts/base/protocols/quic/decrypt-fail-google-de-51833.zeek
new file mode 100644
index 0000000000..23c9cdaf0e
--- /dev/null
+++ b/testing/btest/scripts/base/protocols/quic/decrypt-fail-google-de-51833.zeek
@@ -0,0 +1,12 @@
+# @TEST-DOC: PCAP for which decryption failed due to not using the initial destination connection ID consistently.
+
+# @TEST-REQUIRES: ${SCRIPTS}/have-spicy
+# @TEST-EXEC: zeek -Cr $TRACES/quic/quic-decrypt-fail-google-de-51833.pcap base/protocols/quic
+# @TEST-EXEC: test ! -f analyzer.log
+# @TEST-EXEC: test ! -f dpd.log
+# @TEST-EXEC: zeek-cut -m ts uid history service < conn.log > conn.log.cut
+# @TEST-EXEC: btest-diff conn.log.cut
+# @TEST-EXEC: zeek-cut -m ts uid server_name history < quic.log > quic.log.cut
+# @TEST-EXEC: btest-diff quic.log.cut
+# @TEST-EXEC: zeek-cut -m ts uid version cipher curve server_name resumed last_alert next_protocol established ssl_history < ssl.log > ssl.log.cut
+# @TEST-EXEC: btest-diff ssl.log.cut
diff --git a/testing/btest/scripts/base/protocols/quic/multiple-initial-fragmented-crypto-only-initial.zeek b/testing/btest/scripts/base/protocols/quic/multiple-initial-fragmented-crypto-only-initial.zeek
new file mode 100644
index 0000000000..0537353ecb
--- /dev/null
+++ b/testing/btest/scripts/base/protocols/quic/multiple-initial-fragmented-crypto-only-initial.zeek
@@ -0,0 +1,12 @@
+# @TEST-DOC: Pcap with CRYPTO frames fragemented over multiple INITIAL packets. The pcap only contains 3 INITIAL packets. Check what logs are created.
+
+# @TEST-REQUIRES: ${SCRIPTS}/have-spicy
+# @TEST-EXEC: zeek -Cr $TRACES/quic/quic-multiple-initial-fragmented-crypto-only-initial.pcap base/protocols/quic
+# @TEST-EXEC: test ! -f analyzer.log
+# @TEST-EXEC: test ! -f dpd.log
+# @TEST-EXEC: zeek-cut -m ts uid history service < conn.log > conn.log.cut
+# @TEST-EXEC: btest-diff conn.log.cut
+# @TEST-EXEC: zeek-cut -m ts uid server_name history < quic.log > quic.log.cut
+# @TEST-EXEC: btest-diff quic.log.cut
+# @TEST-EXEC: zeek-cut -m ts uid version cipher curve server_name resumed last_alert next_protocol established ssl_history < ssl.log > ssl.log.cut
+# @TEST-EXEC: btest-diff ssl.log.cut
diff --git a/testing/btest/scripts/base/protocols/quic/multiple-initial-fragmented-crypto.zeek b/testing/btest/scripts/base/protocols/quic/multiple-initial-fragmented-crypto.zeek
new file mode 100644
index 0000000000..98696053bd
--- /dev/null
+++ b/testing/btest/scripts/base/protocols/quic/multiple-initial-fragmented-crypto.zeek
@@ -0,0 +1,12 @@
+# @TEST-DOC: Pcap with CRYPTO frames fragemented over multiple INITIAL packets.
+
+# @TEST-REQUIRES: ${SCRIPTS}/have-spicy
+# @TEST-EXEC: zeek -Cr $TRACES/quic/quic-multiple-initial-fragmented-crypto.pcap base/protocols/quic
+# @TEST-EXEC: test ! -f analyzer.log
+# @TEST-EXEC: test ! -f dpd.log
+# @TEST-EXEC: zeek-cut -m ts uid history service < conn.log > conn.log.cut
+# @TEST-EXEC: btest-diff conn.log.cut
+# @TEST-EXEC: zeek-cut -m ts uid server_name history < quic.log > quic.log.cut
+# @TEST-EXEC: btest-diff quic.log.cut
+# @TEST-EXEC: zeek-cut -m ts uid version cipher curve server_name resumed last_alert next_protocol established ssl_history < ssl.log > ssl.log.cut
+# @TEST-EXEC: btest-diff ssl.log.cut
diff --git a/testing/external/commit-hash.zeek-testing b/testing/external/commit-hash.zeek-testing
index 478402fe91..c7c33cec5b 100644
--- a/testing/external/commit-hash.zeek-testing
+++ b/testing/external/commit-hash.zeek-testing
@@ -1 +1 @@
-b7c465d5a208546bd27801496eb7e6035b208f27
+5fd78ecbdd834feff545f3a3c19b974d927ffb91