Bug#610918: exim4: Fails to start when kernel does not support ipv6
Samuel Thibault
Version: 4.72-3
Severity: important
Hello,
Nowadays, the exim4 package enables listening on ipv6 by default:
/etc/exim4/update-exim4.conf.conf:
dc_local_interfaces='127.0.0.1 ; ::1'
However, this fails when the kernel does not support ipv6 (or it was
disabled thanks to ipv6.disable=1 or disable_ipv6=1):
2011-01-24 00:54:28 IPv6 socket creation failed: No such file or
directory
and if I retry to start, as well as further retries:
2011-01-24 00:55:28 IPv6 socket creation failed: Address family not
supported by protocol
exim4 should probably not completely fail when such EAFNOSUPPORT error
is returned.
Samuel
-- Package-specific info:
Exim version 4.72 #1 built 29-Dec-2010 18:56:47
Copyright (c) University of Cambridge, 1995 - 2007
Berkeley DB: Berkeley DB 4.8.30: (April 9, 2010)
Support for: crypteq iconv() IPv6 GnuTLS move_frozen_messages DKIM
Lookups: lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmnz dnsdb dsearch nis nis0 passwd
Authenticators: cram_md5 plaintext
Routers: accept dnslookup ipliteral manualroute queryprogram redirect
Transports: appendfile/maildir/mailstore autoreply lmtp pipe smtp
Fixed never_users: 0
Size of off_t: 8
GnuTLS compile-time version: 2.8.6
GnuTLS runtime version: 2.8.6
Configuration file is /var/lib/exim4/config.autogenerated
-- System Information:
Debian Release: 6.0
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.37 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages exim4 depends on:
ii cdebconf [debconf-2.0] 0.153 Debian Configuration Management Sy
ii debconf [debconf-2.0] 1.5.36 Debian configuration management sy
ii exim4-base 4.72-3+b1 support files for all Exim MTA (v4
ii exim4-daemon-light 4.72-3+b1 lightweight Exim MTA (v4) daemon
exim4 recommends no packages.
exim4 suggests no packages.
-- debconf information excluded
--
To UNSUBSCRIBE, email to debian-bugs-...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listm...@lists.debian.org
Andreas Metzler
> Package: exim4
> Version: 4.72-3
> Severity: important
> Hello,
> Nowadays, the exim4 package enables listening on ipv6 by default:
> /etc/exim4/update-exim4.conf.conf:
> dc_local_interfaces='127.0.0.1 ; ::1'
> However, this fails when the kernel does not support ipv6 (or it was
> disabled thanks to ipv6.disable=1 or disable_ipv6=1):
> 2011-01-24 00:54:28 IPv6 socket creation failed: No such file or
> directory
> and if I retry to start, as well as further retries:
> 2011-01-24 00:55:28 IPv6 socket creation failed: Address family not
> supported by protocol
> exim4 should probably not completely fail when such EAFNOSUPPORT error
> is returned.
[...]
I tend to disagree. If I explicitely tell exim to do the impossible,
failing safely instead of hiding the error by starting anyway is not
the worst choice.
cu andreas
Samuel Thibault
> > exim4 should probably not completely fail when such EAFNOSUPPORT error
> > is returned.
> [...]
>
> I tend to disagree. If I explicitely tell exim to do the impossible,
> failing safely instead of hiding the error by starting anyway is not
> the worst choice.
Ok, then Debian shouldn't ask exim to do the impossible by including ::1
in the list of listening addresses.
Samuel