On Thu, 2011-02-24 at 12:53 +0000, Ben Hutchings wrote: > Package: libwww-perl > Version: 5.837-1 > Severity: serious > Tags: ipv6 > > The format of IPv6 host literals in URLs is specified in RFC 2732. > > $ ping6 2001:470:1f08:1539::4 > PING 2001:470:1f08:1539::4(2001:470:1f08:1539::4) 56 data bytes > 64 bytes from 2001:470:1f08:1539::4: icmp_seq=1 ttl=64 time=7.94 ms > ^C > --- 2001:470:1f08:1539::4 ping statistics --- > 1 packets transmitted, 1 received, 0% packet loss, time 0ms > rtt min/avg/max/mdev = 7.945/7.945/7.945/0.000 ms > $ HEAD http://[2001:470:1f08:1539::4]:80/ > 500 Can't connect to 2001:470:1f08:1539::4:80 (Bad hostname > '2001:470:1f08:1539::4') > Content-Type: text/plain > Client-Date: Thu, 24 Feb 2011 12:52:41 GMT > Client-Warning: Internal response
Oh, it's worse than that. I thought hostnames resolving to IPv6 addresses worked, but HEAD is just using the IPv4 address. Picking a hostname without an IPv4 address: $ strace -e socket HEAD http://ipv6.google.com/ socket(PF_FILE, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 3 socket(PF_FILE, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 3 socket(PF_INET, SOCK_DGRAM|SOCK_NONBLOCK, IPPROTO_IP) = 3 500 Can't connect to ipv6.google.com:80 (Bad hostname 'ipv6.google.com') Content-Type: text/plain Client-Date: Thu, 24 Feb 2011 13:14:44 GMT Client-Warning: Internal response Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse.
signature.asc
Description: This is a digitally signed message part
