| 2007-09-21 16:51:39 |
Scott Kitterman |
description |
Binary package hint: libnet-dns-perl
The IP address detection logic (for PTR query magic) in
Net::DNS::Resolver::Base::make_query_packet() is seriously broken as of
Net::DNS 0.60.
The documentation for Net::DNS::Resolver::send() specifies:
| The argument list can be either a Net::DNS::Packet object or a list
| of strings. The record type and class can be omitted; they default to
| A and IN. If the name looks like an IP address (Ipv4 or IPv6), then
| an appropriate PTR query will be performed.
However, "foo:bar/baz.example.com" does NOT look like an IP address!
Setting up libnet-dns-perl (0.60-1) ...
$ perl -MNet::DNS::Resolver -MData::Dumper -e 'my $r = Net::DNS::Resolver->new(); my $packet = $r->make_query_packet("foo:bar/baz.example.com", "A"); print(Dumper($packet->question))'
$VAR1 = bless( {
'qclass' => 'IN',
'qname' => 'r.a.b.0.o.o.f.0.ip6.arpa',
'qtype' => 'PTR'
}, 'Net::DNS::Question' );
Setting up libnet-dns-perl (0.59-1build1) ...
$ perl -MNet::DNS::Resolver -MData::Dumper -e 'my $r = Net::DNS::Resolver->new(); my $packet = $r->make_query_packet("foo:bar/baz.example.com", "A"); print(Dumper($packet->question))'
$VAR1 = bless( {
'qclass' => 'IN',
'qname' => 'foo:bar/baz.example.com',
'qtype' => 'A'
}, 'Net::DNS::Question' );
It looks like the problem is a regex that believes that if both ":" and "/" appear in a domain name it must be an IPv6 address. These are both legal. |
Binary package hint: libnet-dns-perl
The IP address detection logic (for PTR query magic) in
Net::DNS::Resolver::Base::make_query_packet() is seriously broken as of
Net::DNS 0.60.
The documentation for Net::DNS::Resolver::send() specifies:
| The argument list can be either a Net::DNS::Packet object or a list
| of strings. The record type and class can be omitted; they default to
| A and IN. If the name looks like an IP address (Ipv4 or IPv6), then
| an appropriate PTR query will be performed.
However, "foo:bar/baz.example.com" does NOT look like an IP address!
Setting up libnet-dns-perl (0.60-1) ...
$ perl -MNet::DNS::Resolver -MData::Dumper -e 'my $r = Net::DNS::Resolver->new(); my $packet = $r->make_query_packet("foo:bar/baz.example.com", "A"); print(Dumper($packet->question))'
$VAR1 = bless( {
'qclass' => 'IN',
'qname' => 'r.a.b.0.o.o.f.0.ip6.arpa',
'qtype' => 'PTR'
}, 'Net::DNS::Question' );
Setting up libnet-dns-perl (0.59-1build1) ...
$ perl -MNet::DNS::Resolver -MData::Dumper -e 'my $r = Net::DNS::Resolver->new(); my $packet = $r->make_query_packet("foo:bar/baz.example.com", "A"); print(Dumper($packet->question))'
$VAR1 = bless( {
'qclass' => 'IN',
'qname' => 'foo:bar/baz.example.com',
'qtype' => 'A'
}, 'Net::DNS::Question' );
It looks like the problem is a regex that believes that if both ":" and "/" appear in a domain name it must be an IPv6 address. These are both legal.
Upstream bug is https://rt.cpan.org/Public/Bug/Display.html?id=29531 but my LP foo is insuffienct to link to it. |
|
