host(1) problem with -6 option

mdh mdh_lists at yahoo.com
Sat Nov 8 09:36:58 PST 2008


Howdy folks,
I'm having a little trouble understanding a problem that the `host` command in RELENG_7_0 (very recent) is having.  This is by and large my first time working with IPv6, which I've been meaning to learn for some time.  First off, I've got my zone file configured to return a AAAA record for x1.mydomain and named isn't complaining.  However, when I run `host -6 x1.mydomain`, host returns the following output:

(root at rapier) [/etc/namedb]: host -6 x1.mydomain
/usr/src/lib/bind/isc/../../../contrib/bind9/lib/isc/unix/socket.c:1179: internal_send: ::ffff:127.0.0.1#53: Invalid argument
/usr/src/lib/bind/isc/../../../contrib/bind9/lib/isc/unix/socket.c:1179: internal_send: ::ffff:IP.IP.IP.8#53: Invalid argument
/usr/src/lib/bind/isc/../../../contrib/bind9/lib/isc/unix/socket.c:1179: internal_send: ::ffff:127.0.0.1#53: Invalid argument
/usr/src/lib/bind/isc/../../../contrib/bind9/lib/isc/unix/socket.c:1179: internal_send: ::ffff:IP.IP.IP.8#53: Invalid argument
;; connection timed out; no servers could be reached

IP.IP.IP.8 is my ISP's DNS server, and is a third option just in case the localhost DNS server crashes or goes batty while I'm out drinking or somesuch.  Here's my resolv.conf, which shows ::1 listed as the second nameserver entry - however, it seems host -6 never even tries it. 

domain          mydomain
search          mydomain
nameserver      127.0.0.1
nameserver      ::1
nameserver      IP.IP.IP.8

The DNS server running on localhost is authoritative for mydomain.  I can ping it via localhost using both v4 and v6, and I can also ping the external v4 and v6 addresses just fine remotely.  Worth noting is that host without the -6 option resolves the v6 addresses just fine, however it seems like it should work properly with the -6 option as well.  It is likely doing so via the IPv4 nameserver address, since that is the first nameserver specified in resolv.conf.  

This may be a bug deserving a PR, but I'm not entirely sure, so I thought to check here first.  

As I said, I'm new to IPv6, but this behavior seems to be counterintuitive.  Am I just doing it wrong?  

Note: I'm not on -stable, so please CC: me on responses.  

Thanks, Matt



      


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