[ale] weirdness with slow ssh connections (IPv6 related?)

[Steven A. DuChene]

No, the resolv.conf file only has local nameservers in it and
the dns servers only have A records. No AAAA records exist on
the systems. All of those local nameservers are the ones I setup
and are all reachable.

-----Original Message-----
>From: Jeff Lightner <jlightner at water.com>
>Sent: Oct 29, 2009 8:07 AM
>To: "Steven A. DuChene" <linux-clusters at mindspring.com>, Atlanta Linux Enthusiasts - Yes! We run Linux! <ale at ale.org>
>Subject: RE: [ale] weirdness with slow ssh connections (IPv6 related?)
>
>My first thought was the /etc/resolv.conf on the host where you're
>coming from then I read your comment about -4.  Using fully qualified
>domain prevents going through the list of search domains in resolv.conf
>so if you many of those it might make a difference (and of course IP
>ignores it altogether).
>
>On reviewing man page for resolv.conf just now I see it also has option
>inet6:
>
>"inet6  sets RES_USE_INET6 in _res.options.  This has the  effect
>of trying a AAAA query before an A query inside the gethostbyname()
>function, and of mapping  IPv4  responses  in IPv6  ''tunnelled form''
>if no AAAA records are found but an A record set exists."
>
>Is it possible someone put that in your resolv.conf?   For that matter
>does your DNS server have AAAA records and A records? 
>
>While you're at it you might want to verify the resolv.conf doesn't have
>unreachable name servers listed.
>