On Sun, 2014-07-20 at 15:39 +0200, Christoph Egger wrote: > Hi! > > Ben Hutchings <ben@decadent.org.uk> writes: > > On Sat, 2014-07-19 at 08:39 +0200, Christoph Egger wrote: > >> Package: src:linux > >> Version: 3.14.12-1 > >> Severity: important > >> > >> After suspend/resume the computer is unable to perform any IPv6 > >> connection (no ping to fixed IP, no nc, no anything). tcpdump was > >> unfortunately not helpfull in figuring out where exactly it breaks > >> because, as soon as I start tcpdump, things work again. If I stop > >> tcpdump after resume I can still reach all routed IPv6 addresses but > >> only the local ones I have contacted while tcpdump running. Removing > >> the interface and adding it again helps as well. > > [...] > > > > IPv6 addresses are dropped when the interface is taken down. Do you > > have a script that does that on suspend? > > I'm using pm-suspend for suspending: > > | % cat /var/log/pm-suspend.log > | > | % ls /etc/pm/* > | /etc/pm/config.d: > | unload_module > | > | /etc/pm/power.d: > | > | /etc/pm/sleep.d: > | > | % cat /etc/pm/config.d/unload_module > | SUSPEND_MODULES="xhci_hcd" > > anywhere else to look? I haven't done anything manually. Also what's the > current-good way to do suspend without any magic for debugging purposes? echo mem > /sys/power/state > The interface seems up after suspend (IPv4 works, even the autoconf address > works after I remove the manually set IPv6 address). It sounds a little bit like multicast RX is broken after resume (IPv6 uses multicast for neighbour discovery). But, looking at the driver code (r8169) it certainly appears to reprogram the hardware multicast filter on resume. Please send the output of 'ethtool -d eth0' before and after suspend/resume. > The problem either appeared with booting into the 3.13 kernel or with > adding the br0.65 vlan interface -- I can try and see if removing the > vlan interface changes anything as soon as I'm back home. I don't see any changes to r8169 between 3.12 and 3.13 that could explain this. Ben. -- Ben Hutchings Kids! Bringing about Armageddon can be dangerous. Do not attempt it in your own home. - Terry Pratchett and Neil Gaiman, `Good Omens'
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