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net 2.6.16-rc1: multiple ipv6 failures

DISCUSSION Jeff Garzik 4 participants 4 messages Jan 18, 2006

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Jeff Garzik

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#0 lore raw

Just moved my firewall/gateway from 2.6.15 to 2.6.16-rc1, and had a couple IPv6-related problems really bite me.

1) radvd runs at 100% CPU (CentOS 4 userland, 2.6.15 worked fine). I had to kill it.

Quoted 5 lines
Jan 17 21:24:43 pretzel ifup:  done.
Jan 17 21:24:44 pretzel ifup: radvd control enabled, but config is not complete
Jan 17 21:24:50 pretzel radvd[4264]: version 0.7.2 started
Jan 17 21:24:44 pretzel ifup: ERROR    : [ipv6_trigger_radvd] Given pidfile '/var/run/radvd/radvd.pid' doesn't exist, cannot send trigger to radvd
Jan 17 21:24:50 pretzel radvd: radvd startup succeeded

2) bind fails (which everyone on my network immediately noticed, and complained about).

Quoted 9 lines
Jan 17 21:29:04 pretzel named[5110]: loading configuration from '/etc/named.conf'
Jan 17 21:29:04 pretzel named[5110]: /proc/net/if_inet6:sscanf() -> 1 (expected 6)
Jan 17 21:29:04 pretzel named[5110]: interfacemgr.c:827: unexpected error:
Jan 17 21:29:04 pretzel named[5110]: interface iteration failed: failure
Jan 17 21:29:04 pretzel named[5110]: not listening on any interfaces
Jan 17 21:29:04 pretzel named[5110]: command channel listening on 127.0.0.1#953
Jan 17 21:29:04 pretzel named[5110]: /proc/net/if_inet6:sscanf() -> 1 (expected 6)
Jan 17 21:29:04 pretzel named[5110]: interfacemgr.c:827: unexpected error:
Jan 17 21:29:04 pretzel named[5110]: interface iteration failed: failure

Again, 2.6.15 works just fine.

Config attached. 32-bit x86 uniprocessor w/ HT (thus, SMP config).

Jeff

#1 lore raw
Quoted 3 lines · Jeff Garzik

Just moved my firewall/gateway from 2.6.15 to 2.6.16-rc1, and had a couple IPv6-related problems really bite me.

The fix just went in Linus' tree ([IPV6]: Preserve procfs IPV6 address output format).

maintainer
#2 lore raw
In reply to Jeff Garzik

From: Jeff Garzik <[email protected]>
Date: Tue, 17 Jan 2006 21:39:20 -0500

Quoted 12 lines

2) bind fails (which everyone on my network immediately noticed, and complained about).

Quoted 9 lines
Jan 17 21:29:04 pretzel named[5110]: loading configuration from '/etc/named.conf'
Jan 17 21:29:04 pretzel named[5110]: /proc/net/if_inet6:sscanf() -> 1 (expected 6)
Jan 17 21:29:04 pretzel named[5110]: interfacemgr.c:827: unexpected error:
Jan 17 21:29:04 pretzel named[5110]: interface iteration failed: failure
Jan 17 21:29:04 pretzel named[5110]: not listening on any interfaces
Jan 17 21:29:04 pretzel named[5110]: command channel listening on 127.0.0.1#953
Jan 17 21:29:04 pretzel named[5110]: /proc/net/if_inet6:sscanf() -> 1 (expected 6)
Jan 17 21:29:04 pretzel named[5110]: interfacemgr.c:827: unexpected error:
Jan 17 21:29:04 pretzel named[5110]: interface iteration failed: failure

Known problem, fixed by Yoshifuji in current GIT. /proc/net/if_net6's output format got mistakedly changed, and this confused named and ifconfig, among other things.

#3 lore raw
Quoted 3 lines · David S. Miller

Known problem, fixed by Yoshifuji in current GIT. /proc/net/if_net6's output format got mistakedly changed, and this confused named and ifconfig, among other things.

For reference, add dnsmasq to the list of confused userspace: the signature error is:

failed to find list of interfaces: No such device

Cheers,

Simon.