Re: ipunblock branch testing

[Dan Williams <dcbw redhat com>]

On Tue, 2011-10-18 at 18:57 +0200, Tore Anderson wrote:
> Hi,
> 
> By Dan's request, I just tried the ipunblock branch on my home network.
> Sending my feedback to the list - also by Dan's request.
> 
> My home network currently uses SLAAC for IPv6 addressing and
> Information-Only DHCPv6 for DNS server advertisement (no RDNSS Option
> present in RAs). Also standard DHCPv4 for IPv4. I connected using Auto
> for both IPv4 and IPv6 modes, with the «Require IPv(4|6) for this
> connection to complete» settings both disabled.

I've just pushed a fix for what I believe was the problem shown in your
logs.  Can you test?  Thanks again!  If that goes well we can tackle the
SLAAC+DHCP bits which you posted a while back, and after that, hopefully
it's ready to merge.

Dan

> So what happens is that as soon as the DHCPv4 transaction is complete,
> the device is reported to be activated by the systray applet as well as
> in the logs, as expected. The IPv6 activation continues in the
> background, also as expected, however after it has finished it goes on
> to report that «RA-provided address no longer valid», and then «failed
> (reason 'ip-config-unavailable')». The device is then brought down, the
> transaction restarts, and after a few attempts it successfully stays
> activated. However, when it does, resolv.conf does *not* contain the
> IPv6 name servers.
> 
> The symptoms of this bug is eerily similar to the one I fixed in «[PATCH
> v2] ip6-manager: Fix SLAAC/DHCPv6 interaction» (which is NOT applied),
> however in this case stateful DHCPv6 simultaneously with SLAAC, so I
> kind of doubt they have the same root cause.
> 
> I've attached the syslog from the initial networking activation until
> the connection became stable, plus a PCAP of RS/RA/DHCPv6 packets in the
> same time period. Any ideas what is going on? (The system is F15, and
> the F15 NM RPM specfile was used - I only replaced the original source
> tarball with one containing the ipunblock branch).
> 
> Best regards,
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