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Merge remote-tracking branch 'origin/topic/v6-addr' into topic/v6-addr-merge

Browse source 
Conflicts:
	src/DNS_Mgr.cc
	src/Expr.cc
	src/bro.bif
This commit is contained in:
Robin Sommer 2012-02-16 18:28:40 -08:00
commit 5565e19e57
12 changed files with 137 additions and 147 deletions
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14
src/DNS.cc
View file

@ -766,12 +766,20 @@ int DNS_Interpreter::ParseRR_AAAA(DNS_MsgInfo* msg,
if ( len < 0 )
{
analyzer->Weird("DNS_AAAA_neg_length");
if ( msg->atype == TYPE_AAAA )
analyzer->Weird("DNS_AAAA_neg_length");
else
analyzer->Weird("DNS_A6_neg_length");
return 0;
}
}
if ( dns_AAAA_reply && ! msg->skip_event )
EventHandlerPtr event;
if ( msg->atype == TYPE_AAAA )
event = dns_AAAA_reply;
else
event = dns_A6_reply;
if ( event && ! msg->skip_event )
{
val_list* vl = new val_list;
@ -779,7 +787,7 @@ int DNS_Interpreter::ParseRR_AAAA(DNS_MsgInfo* msg,
vl->append(msg->BuildHdrVal());
vl->append(msg->BuildAnswerVal());
vl->append(new AddrVal(addr));
analyzer->ConnectionEvent(dns_AAAA_reply, vl);
analyzer->ConnectionEvent(event, vl);
}
return 1;

94
src/DNS_Mgr.cc
View file

@ -46,13 +46,13 @@ extern int select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
class DNS_Mgr_Request {
public:
DNS_Mgr_Request(const char* h) { host = copy_string(h); addr = 0; }
DNS_Mgr_Request(uint32 a) { addr = a; host = 0; }
DNS_Mgr_Request(const char* h) { host = copy_string(h); }
DNS_Mgr_Request(const IPAddr& a) { addr = a; host = 0; }
~DNS_Mgr_Request() { delete [] host; }
// Returns nil if this was an address request.
const char* ReqHost() const { return host; }
uint32 ReqAddr() const { return addr; }
const IPAddr& ReqAddr() const { return addr; }
int MakeRequest(nb_dns_info* nb_dns);
int RequestPending() const { return request_pending; }
@ -61,7 +61,7 @@ public:
protected:
char* host; // if non-nil, this is a host request
uint32 addr;
IPAddr addr;
uint32 ttl;
int request_pending;
};
@ -77,13 +77,18 @@ int DNS_Mgr_Request::MakeRequest(nb_dns_info* nb_dns)
if ( host )
return nb_dns_host_request(nb_dns, host, (void*) this, err) >= 0;
else
return nb_dns_addr_request(nb_dns, addr, (void*) this, err) >= 0;
{
const uint32* bytes;
int len = addr.GetBytes(&bytes);
return nb_dns_addr_request2(nb_dns, (char*) bytes,
len == 1 ? AF_INET : AF_INET6, (void*) this, err) >= 0;
}
}
class DNS_Mapping {
public:
DNS_Mapping(const char* host, struct hostent* h, uint32 ttl);
DNS_Mapping(uint32 addr, struct hostent* h, uint32 ttl);
DNS_Mapping(const IPAddr& addr, struct hostent* h, uint32 ttl);
DNS_Mapping(FILE* f);
int NoMapping() const { return no_mapping; }
@ -93,10 +98,10 @@ public:
// Returns nil if this was an address request.
const char* ReqHost() const { return req_host; }
uint32 ReqAddr() const { return req_addr; }
IPAddr ReqAddr() const { return req_addr; }
string ReqStr() const
{
return req_host ? req_host : IPAddr(IPAddr::IPv4, &req_addr, IPAddr::Network);
return req_host ? req_host : req_addr;
}
ListVal* Addrs();
@ -123,7 +128,7 @@ protected:
int init_failed;
char* req_host;
uint32 req_addr;
IPAddr req_addr;
uint32 req_ttl;
int num_names;
@ -131,7 +136,7 @@ protected:
StringVal* host_val;
int num_addrs;
uint32* addrs;
IPAddr* addrs;
ListVal* addrs_val;
int failed;
@ -156,14 +161,13 @@ DNS_Mapping::DNS_Mapping(const char* host, struct hostent* h, uint32 ttl)
{
Init(h);
req_host = copy_string(host);
req_addr = 0;
req_ttl = ttl;
if ( names && ! names[0] )
names[0] = copy_string(host);
}
DNS_Mapping::DNS_Mapping(uint32 addr, struct hostent* h, uint32 ttl)
DNS_Mapping::DNS_Mapping(const IPAddr& addr, struct hostent* h, uint32 ttl)
{
Init(h);
req_addr = addr;
@ -177,7 +181,6 @@ DNS_Mapping::DNS_Mapping(FILE* f)
init_failed = 1;
req_host = 0;
req_addr = 0;
char buf[512];
@ -197,12 +200,7 @@ DNS_Mapping::DNS_Mapping(FILE* f)
if ( is_req_host )
req_host = copy_string(req_buf);
else
{
IPAddr addr(req_buf);
const uint32* bytes;
addr.GetBytes(&bytes);
req_addr = *bytes; //FIXME: IPv6 support
}
req_addr = IPAddr(req_buf);
num_names = 1;
names = new char*[num_names];
@ -210,7 +208,7 @@ DNS_Mapping::DNS_Mapping(FILE* f)
if ( num_addrs > 0 )
{
addrs = new uint32[num_addrs];
addrs = new IPAddr[num_addrs];
for ( int i = 0; i < num_addrs; ++i )
{
@ -224,10 +222,7 @@ DNS_Mapping::DNS_Mapping(FILE* f)
if ( newline )
*newline = '\0';
IPAddr addr(buf);
const uint32* bytes;
addr.GetBytes(&bytes);
addrs[i] = *bytes; //FIXME IPv6 support
addrs[i] = IPAddr(buf);
}
}
else
@ -290,14 +285,6 @@ StringVal* DNS_Mapping::Host()
return host_val;
}
// Converts an array of 4 bytes in network order to the corresponding
// 32-bit network long.
static uint32 raw_bytes_to_addr(const unsigned char b[4])
{
uint32 l = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];
return uint32(htonl(l));
}
void DNS_Mapping::Init(struct hostent* h)
{
no_mapping = 0;
@ -306,7 +293,7 @@ void DNS_Mapping::Init(struct hostent* h)
host_val = 0;
addrs_val = 0;
if ( ! h || h->h_addrtype != AF_INET || h->h_length != 4 )
if ( ! h )
{
Clear();
return;
@ -321,10 +308,14 @@ void DNS_Mapping::Init(struct hostent* h)
if ( num_addrs > 0 )
{
addrs = new uint32[num_addrs];
addrs = new IPAddr[num_addrs];
for ( int i = 0; i < num_addrs; ++i )
addrs[i] = raw_bytes_to_addr(
(unsigned char*)h->h_addr_list[i]);
if ( h->h_addrtype == AF_INET )
addrs[i] = IPAddr(IPAddr::IPv4, (uint32*)h->h_addr_list[i],
IPAddr::Network);
else if ( h->h_addrtype == AF_INET6 )
addrs[i] = IPAddr(IPAddr::IPv6, (uint32*)h->h_addr_list[i],
IPAddr::Network);
}
else
addrs = 0;
@ -346,14 +337,12 @@ void DNS_Mapping::Clear()
void DNS_Mapping::Save(FILE* f) const
{
fprintf(f, "%.0f %d %s %d %s %d\n", creation_time, req_host != 0,
req_host ? req_host :
IPAddr(IPAddr::IPv4, &req_addr, IPAddr::Network).AsString().c_str(),
req_host ? req_host : req_addr.AsString().c_str(),
failed, (names && names[0]) ? names[0] : "*",
num_addrs);
for ( int i = 0; i < num_addrs; ++i )
fprintf(f, "%s\n",
IPAddr(IPAddr::IPv4, &addrs[i], IPAddr::Network).AsString().c_str());
fprintf(f, "%s\n", addrs[i].AsString().c_str());
}
@ -487,14 +476,14 @@ TableVal* DNS_Mgr::LookupHost(const char* name)
}
}
Val* DNS_Mgr::LookupAddr(uint32 addr)
Val* DNS_Mgr::LookupAddr(const IPAddr& addr)
{
if ( ! did_init )
Init();
if ( mode != DNS_PRIME )
{
HashKey h(&addr, 1);
HashKey h(addr);
DNS_Mapping* d = addr_mappings.Lookup(&h);
if ( d )
@ -503,7 +492,7 @@ Val* DNS_Mgr::LookupAddr(uint32 addr)
return d->Host();
else
{
string s = IPAddr(IPAddr::IPv4, &addr, IPAddr::Network);
string s(addr);
reporter->Warning("can't resolve IP address: %s", s.c_str());
return new StringVal(s.c_str());
}
@ -518,7 +507,7 @@ Val* DNS_Mgr::LookupAddr(uint32 addr)
case DNS_FORCE:
reporter->FatalError("can't find DNS entry for %s in cache",
IPAddr(IPAddr::IPv4, &addr, IPAddr::Network).AsString().c_str());
addr.AsString().c_str());
return 0;
case DNS_DEFAULT:
@ -707,14 +696,12 @@ void DNS_Mgr::AddResult(DNS_Mgr_Request* dr, struct nb_dns_result* r)
else
{
new_dm = new DNS_Mapping(dr->ReqAddr(), h, ttl);
uint32 tmp_addr = dr->ReqAddr();
HashKey k(&tmp_addr, 1);
HashKey k(dr->ReqAddr());
prev_dm = addr_mappings.Insert(&k, new_dm);
if ( new_dm->Failed() && prev_dm && prev_dm->Valid() )
{
uint32 tmp_addr = dr->ReqAddr();
HashKey k2(&tmp_addr, 1);
HashKey k2(dr->ReqAddr());
(void) addr_mappings.Insert(&k2, prev_dm);
++keep_prev;
}
@ -826,8 +813,7 @@ void DNS_Mgr::LoadCache(FILE* f)
host_mappings.Insert(m->ReqHost(), m);
else
{
uint32 tmp_addr = m->ReqAddr();
HashKey h(&tmp_addr, 1);
HashKey h(m->ReqAddr());
addr_mappings.Insert(&h, m);
}
}
@ -848,9 +834,9 @@ void DNS_Mgr::Save(FILE* f, PDict(DNS_Mapping)& m)
dm->Save(f);
}
const char* DNS_Mgr::LookupAddrInCache(dns_mgr_addr_type addr)
const char* DNS_Mgr::LookupAddrInCache(const IPAddr& addr)
{
HashKey h(&addr, 1);
HashKey h(addr);
DNS_Mapping* d = dns_mgr->addr_mappings.Lookup(&h);
if ( ! d )
@ -886,7 +872,7 @@ TableVal* DNS_Mgr::LookupNameInCache(string name)
return d->AddrsSet();
}
void DNS_Mgr::AsyncLookupAddr(dns_mgr_addr_type host, LookupCallback* callback)
void DNS_Mgr::AsyncLookupAddr(const IPAddr& host, LookupCallback* callback)
{
if ( ! did_init )
Init();
@ -996,7 +982,7 @@ double DNS_Mgr::NextTimestamp(double* network_time)
return asyncs_timeouts.size() ? timer_mgr->Time() : -1.0;
}
void DNS_Mgr::CheckAsyncAddrRequest(dns_mgr_addr_type addr, bool timeout)
void DNS_Mgr::CheckAsyncAddrRequest(const IPAddr& addr, bool timeout)
{
// Note that this code is a mirror of that for CheckAsyncHostRequest.

16
src/DNS_Mgr.h
View file

@ -40,10 +40,6 @@ enum DNS_MgrMode {
// Number of seconds we'll wait for a reply.
#define DNS_TIMEOUT 5
// ### For now, we don't support IPv6 lookups. When we do, this
// should become addr_type.
typedef uint32 dns_mgr_addr_type;
class DNS_Mgr : public IOSource {
public:
DNS_Mgr(DNS_MgrMode mode);
@ -56,7 +52,7 @@ public:
// a set of addr.
TableVal* LookupHost(const char* host);
Val* LookupAddr(uint32 addr);
Val* LookupAddr(const IPAddr& addr);
// Define the directory where to store the data.
void SetDir(const char* arg_dir) { dir = copy_string(arg_dir); }
@ -65,7 +61,7 @@ public:
void Resolve();
int Save();
const char* LookupAddrInCache(dns_mgr_addr_type addr);
const char* LookupAddrInCache(const IPAddr& addr);
TableVal* LookupNameInCache(string name);
// Support for async lookups.
@ -79,7 +75,7 @@ public:
virtual void Timeout() = 0;
};
void AsyncLookupAddr(dns_mgr_addr_type host, LookupCallback* callback);
void AsyncLookupAddr(const IPAddr& host, LookupCallback* callback);
void AsyncLookupName(string name, LookupCallback* callback);
struct Stats {
@ -121,7 +117,7 @@ protected:
// Finish the request if we have a result. If not, time it out if
// requested.
void CheckAsyncAddrRequest(dns_mgr_addr_type addr, bool timeout);
void CheckAsyncAddrRequest(const IPAddr& addr, bool timeout);
void CheckAsyncHostRequest(const char* host, bool timeout);
// Process outstanding requests.
@ -164,7 +160,7 @@ protected:
struct AsyncRequest {
double time;
dns_mgr_addr_type host;
IPAddr host;
string name;
CallbackList callbacks;
@ -205,7 +201,7 @@ protected:
};
typedef map<dns_mgr_addr_type, AsyncRequest*> AsyncRequestAddrMap;
typedef map<IPAddr, AsyncRequest*> AsyncRequestAddrMap;
AsyncRequestAddrMap asyncs_addrs;
typedef map<string, AsyncRequest*> AsyncRequestNameMap;

64
src/DPM.cc
View file

@ -17,22 +17,37 @@ ExpectedConn::ExpectedConn(const IPAddr& _orig, const IPAddr& _resp,
if ( _orig == IPAddr(string("0.0.0.0")) )
// don't use the IPv4 mapping, use the literal unspecified address
// to indicate a wildcard
orig[0] = orig[1] = orig[2] = orig[3] = 0;
orig = IPAddr(string("::"));
else
_orig.CopyIPv6(orig);
_resp.CopyIPv6(resp);
orig = _orig;
resp = _resp;
resp_p = _resp_p;
proto = _proto;
}
ExpectedConn::ExpectedConn(const ExpectedConn& c)
{
memcpy(orig, c.orig, sizeof(orig));
memcpy(resp, c.resp, sizeof(resp));
orig = c.orig;
resp = c.resp;
resp_p = c.resp_p;
proto = c.proto;
}
HashKey* ExpectedConn::GetKey() const
{
struct Key {
uint32 orig[4];
uint32 resp[4];
uint16 resp_p;
uint16 proto;
};
Key k;
orig.CopyIPv6(k.orig);
resp.CopyIPv6(k.resp);
k.resp_p = resp_p;
k.proto = proto;
return new HashKey(&k, sizeof(k));
}
DPM::DPM()
: expected_conns_queue(AssignedAnalyzer::compare)
@ -134,23 +149,18 @@ AnalyzerTag::Tag DPM::GetExpected(int proto, const Connection* conn)
ExpectedConn c(conn->OrigAddr(), conn->RespAddr(),
ntohs(conn->RespPort()), proto);
// Can't use sizeof(c) due to potential alignment issues.
// FIXME: I guess this is still not portable ...
HashKey key(&c, sizeof(c.orig) + sizeof(c.resp) +
sizeof(c.resp_p) + sizeof(c.proto));
AssignedAnalyzer* a = expected_conns.Lookup(&key);
HashKey* key = c.GetKey();
AssignedAnalyzer* a = expected_conns.Lookup(key);
delete key;
if ( ! a )
{
// Wildcard for originator.
for ( int i = 0; i < 4; ++i )
c.orig[i] = 0;
c.orig = IPAddr(string("::"));
HashKey key(&c, sizeof(c.orig) + sizeof(c.resp) +
sizeof(c.resp_p) + sizeof(c.proto));
a = expected_conns.Lookup(&key);
HashKey* key = c.GetKey();
a = expected_conns.Lookup(key);
delete key;
}
if ( ! a )
@ -393,11 +403,7 @@ void DPM::ExpectConnection(const IPAddr& orig, const IPAddr& resp,
{
if ( ! a->deleted )
{
HashKey* key = new HashKey(&a->conn,
sizeof(a->conn.orig) +
sizeof(a->conn.resp) +
sizeof(a->conn.resp_p) +
sizeof(a->conn.proto));
HashKey* key = a->conn.GetKey();
expected_conns.Remove(key);
delete key;
}
@ -416,10 +422,9 @@ void DPM::ExpectConnection(const IPAddr& orig, const IPAddr& resp,
ExpectedConn c(orig, resp, resp_p, proto);
HashKey key(&c, sizeof(c.orig) + sizeof(c.resp) +
sizeof(c.resp_p) + sizeof(c.proto));
HashKey* key = c.GetKey();
AssignedAnalyzer* a = expected_conns.Lookup(&key);
AssignedAnalyzer* a = expected_conns.Lookup(key);
if ( a )
a->deleted = true;
@ -431,8 +436,9 @@ void DPM::ExpectConnection(const IPAddr& orig, const IPAddr& resp,
a->timeout = network_time + timeout;
a->deleted = false;
expected_conns.Insert(&key, a);
expected_conns.Insert(key, a);
expected_conns_queue.push(a);
delete key;
}
void DPM::Done()
@ -443,11 +449,7 @@ void DPM::Done()
AssignedAnalyzer* a = expected_conns_queue.top();
if ( ! a->deleted )
{
HashKey* key = new HashKey(&a->conn,
sizeof(a->conn.orig) +
sizeof(a->conn.resp) +
sizeof(a->conn.resp_p) +
sizeof(a->conn.proto));
HashKey* key = a->conn.GetKey();
expected_conns.Remove(key);
delete key;
}

6
src/DPM.h
View file

@ -32,8 +32,10 @@ public:
ExpectedConn(const ExpectedConn& c);
uint32 orig[4];
uint32 resp[4];
HashKey* GetKey() const;
IPAddr orig;
IPAddr resp;
uint16 resp_p;
uint16 proto;
};

32
src/Expr.cc
View file

@ -835,22 +835,30 @@ Val* BinaryExpr::StringFold(Val* v1, Val* v2) const
Val* BinaryExpr::AddrFold(Val* v1, Val* v2) const
{
uint32 a1[4];
uint32 a2[4];
v1->AsAddr().CopyIPv6(a1);
v2->AsAddr().CopyIPv6(a2);
IPAddr a1 = v1->AsAddr();
IPAddr a2 = v2->AsAddr();
int result = 0;
switch ( tag ) {
#undef DO_FOLD
#define DO_FOLD(sense) { result = memcmp(a1, a2, 16) sense 0; break; }
case EXPR_LT: DO_FOLD(<)
case EXPR_LE: DO_FOLD(<=)
case EXPR_EQ: DO_FOLD(==)
case EXPR_NE: DO_FOLD(!=)
case EXPR_GE: DO_FOLD(>=)
case EXPR_GT: DO_FOLD(>)
case EXPR_LT:
result = a1 < a2;
break;
case EXPR_LE:
result = a1 < a2 || a1 == a2;
break;
case EXPR_EQ:
result = a1 == a2;
break;
case EXPR_NE:
result = a1 != a2;
break;
case EXPR_GE:
result = ! ( a1 < a2 );
break;
case EXPR_GT:
result = ( ! ( a1 < a2 ) ) && ( a1 != a2 );
break;
default:
BadTag("BinaryExpr::AddrFold", expr_name(tag));

10
src/Hash.cc
View file

@ -103,6 +103,16 @@ HashKey::HashKey(const BroString* s)
is_our_dynamic = 0;
}
HashKey::HashKey(const IPAddr& addr)
{
const uint32* bytes;
int len = addr.GetBytes(&bytes);
size = len * sizeof(uint32);
key = CopyKey(bytes, size);
is_our_dynamic = 1;
hash = HashBytes(key, size);
}
HashKey::HashKey(int copy_key, void* arg_key, int arg_size)
{
size = arg_size;

2
src/Hash.h
View file

@ -6,6 +6,7 @@
#include <stdlib.h>
#include "BroString.h"
#include "IPAddr.h"
#define UHASH_KEY_SIZE 36
@ -28,6 +29,7 @@ public:
HashKey(const void* p);
HashKey(const char* s);
HashKey(const BroString* s);
HashKey(const IPAddr& addr);
~HashKey()
{
if ( is_our_dynamic )

20
src/IP.h
View file

@ -10,26 +10,22 @@
class IP_Hdr {
public:
IP_Hdr(struct ip* arg_ip4)
: ip4(arg_ip4), ip6(0),
src_addr(arg_ip4->ip_src), dst_addr(arg_ip4->ip_dst), del(1)
: ip4(arg_ip4), ip6(0), del(1)
{
}
IP_Hdr(const struct ip* arg_ip4)
: ip4(arg_ip4), ip6(0),
src_addr(arg_ip4->ip_src), dst_addr(arg_ip4->ip_dst), del(0)
: ip4(arg_ip4), ip6(0), del(0)
{
}
IP_Hdr(struct ip6_hdr* arg_ip6)
: ip4(0), ip6(arg_ip6),
src_addr(arg_ip6->ip6_src), dst_addr(arg_ip6->ip6_dst), del(1)
: ip4(0), ip6(arg_ip6), del(1)
{
}
IP_Hdr(const struct ip6_hdr* arg_ip6)
: ip4(0), ip6(arg_ip6),
src_addr(arg_ip6->ip6_src), dst_addr(arg_ip6->ip6_dst), del(0)
: ip4(0), ip6(arg_ip6), del(0)
{
}
@ -47,8 +43,10 @@ public:
const struct ip* IP4_Hdr() const { return ip4; }
const struct ip6_hdr* IP6_Hdr() const { return ip6; }
const IPAddr& SrcAddr() const { return src_addr; }
const IPAddr& DstAddr() const { return dst_addr; }
IPAddr SrcAddr() const
{ return ip4 ? IPAddr(ip4->ip_src) : IPAddr(ip6->ip6_src); }
IPAddr DstAddr() const
{ return ip4 ? IPAddr(ip4->ip_dst) : IPAddr(ip6->ip6_dst); }
//TODO: needs adapting/replacement for IPv6 support
uint16 ID4() const { return ip4 ? ip4->ip_id : 0; }
@ -92,8 +90,6 @@ public:
private:
const struct ip* ip4;
const struct ip6_hdr* ip6;
IPAddr src_addr;
IPAddr dst_addr;
int del;
};

2
src/Val.cc
View file

@ -923,7 +923,6 @@ SubNetVal::SubNetVal(const char* text, int width) : Val(TYPE_SUBNET)
val.subnet_val = new IPPrefix(text, width);
}
#if 0
SubNetVal::SubNetVal(uint32 addr, int width) : Val(TYPE_SUBNET)
{
IPAddr a(IPAddr::IPv4, &addr, IPAddr::Network);
@ -935,7 +934,6 @@ SubNetVal::SubNetVal(const uint32* addr, int width) : Val(TYPE_SUBNET)
IPAddr a(IPAddr::IPv6, addr, IPAddr::Network);
val.subnet_val = new IPPrefix(a, width);
}
#endif
SubNetVal::SubNetVal(const IPAddr& addr, int width) : Val(TYPE_SUBNET)
{

20
src/bro.bif
View file

@ -3441,25 +3441,7 @@ function lookup_addr%(host: addr%) : string
frame->SetDelayed();
trigger->Hold();
if ( host->AsAddr().GetFamily() != IPAddr::IPv4 )
{
// FIXME: This is a temporary work-around until we get this
// fixed. We warn the user once, and always trigger a timeout.
// Ticket #355 records the problem.
static bool warned = false;
if ( ! warned )
{
reporter->Warning("lookup_addr() only supports IPv4 addresses currently");
warned = true;
}
trigger->Timeout();
return 0;
}
const uint32* bytes;
host->AsAddr().GetBytes(&bytes);
dns_mgr->AsyncLookupAddr(*bytes,
dns_mgr->AsyncLookupAddr(host->AsAddr(),
new LookupHostCallback(trigger, frame->GetCall(), true));
return 0;
%}

4
src/nb_dns.c
View file

@ -186,7 +186,7 @@ _nb_dns_cmpsockaddr(register struct sockaddr *sa1,
#endif
static const char serr[] = "answer from wrong nameserver (%d)";
if (sa1->sa_family != sa1->sa_family) {
if (sa1->sa_family != sa2->sa_family) {
snprintf(errstr, NB_DNS_ERRSIZE, serr, 1);
return (-1);
}
@ -381,7 +381,7 @@ nb_dns_addr_request2(register struct nb_dns_info *nd, char *addrp,
size -= i;
cp += i;
}
snprintf(cp, size, "ip6.int");
snprintf(cp, size, "ip6.arpa");
break;
#endif