[radvd-devel-l] radvd stuck on linux 2.6.31+

[Steven J Newbury]

On Mon, 2009-09-28 at 14:00 +0100, Steven J Newbury wrote:
> On Mon, 2009-09-28 at 13:21 +0100, Steven J Newbury wrote:
> > On Mon, 2009-09-28 at 15:01 +0300, Pekka Savola wrote:
> > > There are a couple of odd messages here:
> > > 
> > > On Mon, 28 Sep 2009, Steven J Newbury wrote:
> > > > eater ~ # radvd -C /etc/radvd.conf -u radvd -d 5 -m stderr
> > > > [Sep 28 12:23:04] radvd: version 1.5 started
> > > > [Sep 28 12:23:04] radvd: interface wlan0 did not exist, ignoring the interface
> > > ...
> > > > [Sep 28 12:23:04] radvd: no linklocal address configured for wlan0
> > > > [Sep 28 12:23:04] radvd: interface definition for wlan0 is ok
> > > ...
> > > > [Sep 28 12:23:04] radvd: interface eth0 did not exist, ignoring the interface
> > > 
> > > First, it's complaining that wlan0 does not exist.  What does it look 
> > > like with '/sbin/ifconfig wlan0'?  The flags should should be UP, 
> > > BROADCAST, RUNNING, MULTICAST unless something changed, and a 
> > > link-local address should exist.  One speculation wrt changing is that 
> > > the ioctl interface and RUNNING flag definition could have changed, 
> > > causing userspace-kernel mismatch.
> > > 
> > > I'm also wondering why it's reporting about other interfaces here.  Do 
> > > you also have them configured on radvd.conf and omitted this for 
> > > brevity or is radvd picking them up from somewhere else?
> > wlan1 is my link to the Internet facing router, for the purposes of
> > trying to fix this, wlan0 is not currently in use, neither is eth0 nor
> > the tun0 device.  I have them configured "IgnoreIfMissing" in
> > radvd.conf.
> > 
> > I've now removed all other devices from the config and switched back to
> > my old kernel.  Strangely I'm seeing very few RA broadcasts on my client
> > machine, and my kernel hasn't picked up the advertised network
> > configuration.  I'm somewhat at a loss now.  I'm going to try updating
> > the kernel on the client, but this was all working fine just yesterday!
> > 
> > More to come no doubt...
> After rebooting my client laptop, it just started working with solicited
> RAs.  I don't know why that stopped working?!?  I'm switching back to
> the new kernel now, and I'll see if I get any broadcasts, since it's the
> lack of radvdump received broadcasts which led me to think it an issue
> server-side...
Okay, I'm not getting any unsolicited RA broadcasts with the new kernel.
Also, devices configured IgnoreIfMissing are still ignored even after
they come up and have a valid link-local address unless radvd is
restarted. (Tested the latter with my OpenVPN tunnel.)

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