Re: 2.6.24-rc6-mm1 - oddness with IPv4/v6 mapped sockets hanging...

From: Valdis . Kletnieks
Date: Mon Jan 14 2008 - 11:15:58 EST


On Sun, 13 Jan 2008 02:35:33 EST, Valdis.Kletnieks@xxxxxx said:

> I'm seeing problems with Sendmail on 24-rc6-mm1, where the main Sendmail is
> listening on ::1/25, and Fetchmail connects to 127.0.0.1:25 to inject mail it
> has just fetched from an outside server via IMAP - it will often just hang and
> not make any further progress. Looking at netstat shows something interesting:
>
> % netstat -n -a -A inet | grep 25
> tcp 0 5108 127.0.0.1:59355 127.0.0.1:25 ESTABLISHED

The IPv6 is apparently a red herring - this morning I'm seeing the same problem
with another totally separate pair of programs that are IPv4-only, hanging
on loopback.

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