Bug#514644: ipv6: net.ipv6.conf.*.temp_valid_lft counter seems to overflow
Package: linux-image-2.6.26-1-686
Version: 2.6.26-13
Severity: normal
#v+
# dev="wire"
# ip link set $dev down
# sysctl -w net.ipv6.conf.$dev.use_tempaddr=2
net.ipv6.conf.wire.use_tempaddr = 2
# sysctl -w net.ipv6.conf.$dev.max_desync_factor=0
net.ipv6.conf.wire.max_desync_factor = 0
# sysctl -w net.ipv6.conf.$dev.temp_valid_lft=9
net.ipv6.conf.wire.temp_valid_lft = 9
# sysctl -w net.ipv6.conf.$dev.temp_prefered_lft=6
net.ipv6.conf.wire.temp_prefered_lft = 6
# ip address flush dev $dev 2>/dev/null
# ip link set $dev up
# for x in `seq 1 25`; do sleep 1; ip -6 a sh dev $dev secondary | grep _lft; done
valid_lft 9sec preferred_lft 604800sec
valid_lft 8sec preferred_lft 604799sec
valid_lft 6sec preferred_lft 604797sec
valid_lft 5sec preferred_lft 604796sec
valid_lft 4sec preferred_lft 604795sec
valid_lft 3sec preferred_lft 604794sec
valid_lft 2sec preferred_lft 604793sec
valid_lft 1sec preferred_lft 604792sec
valid_lft 0sec preferred_lft 604791sec
valid_lft forever preferred_lft 604790sec
valid_lft 4294967294sec preferred_lft 604789sec
valid_lft 4294967293sec preferred_lft 604788sec
valid_lft 4294967292sec preferred_lft 604787sec
valid_lft 4294967291sec preferred_lft 604786sec
valid_lft 4294967290sec preferred_lft 604785sec
valid_lft 4294967289sec preferred_lft 604784sec
valid_lft 4294967288sec preferred_lft 604783sec
valid_lft 4294967287sec preferred_lft 604782sec
valid_lft 4294967286sec preferred_lft 604781sec
valid_lft 4294967285sec preferred_lft 604780sec
valid_lft 4294967284sec preferred_lft 604779sec
#v-
It doesn't seems to be caused by relatively low value of temp_valid_lft,
since I've succeed to reproduce this behaviour with temp_valid_lft = 200.
-- Package-specific info:
** Version:
Linux version 2.6.26-1-686 (Debian 2.6.26-13) (waldi@debian.org) (gcc version 4.1.3 20080704 (prerelease) (Debian 4.1.2-24)) #1 SMP Sat Jan 10 18:29:31 UTC 2009
** Not tainted
-- System Information:
Debian Release: 5.0
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.26-1-686 (SMP w/1 CPU core)
Shell: /bin/sh linked to /bin/dash
Versions of packages linux-image-2.6.26-1-686 depends on:
ii debconf [debconf-2.0] 1.5.24 Debian configuration management sy
ii initramfs-tools [linux-initra 0.92o tools for generating an initramfs
ii module-init-tools 3.4-1 tools for managing Linux kernel mo
Versions of packages linux-image-2.6.26-1-686 recommends:
ii libc6-i686 2.9-0exp2 GNU C Library: Shared libraries [i
Versions of packages linux-image-2.6.26-1-686 suggests:
ii lilo 1:22.8-7 LInux LOader - The Classic OS load
pn linux-doc-2.6.26 <none> (no description available)
-- debconf information excluded
--
Piotr Lewandowski
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