netdev - Re: regression when connecting to ipv6 localhost

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Date:	Sun, 14 Oct 2012 23:02:29 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jan Hinnerk Stosch <janhinnerk.stosch@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: regression when connecting to ipv6 localhost

On Sun, 2012-10-14 at 22:56 +0200, Jan Hinnerk Stosch wrote:
> 2012/10/14 Eric Dumazet <eric.dumazet@...il.com>:
> > On Sun, 2012-10-14 at 22:45 +0200, Eric Dumazet wrote:
> >
> >> OK so IPv6 UDP frames are delivered to ntpd
> >>
> >> could you strace it while doing one "ntpq -p"
> >>
> >> strace -p 368
> >>
> >
> > Also please post "ip -6 addr"
> >
> >
> 
> ip -6 addr gives:
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436
>     inet6 ::1/128 scope host
>        valid_lft forever preferred_lft forever
> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
>     inet6 fe80::922b:34ff:fe33:c292/64 scope link
>        valid_lft forever preferred_lft forever
> 
> And the output of "strace ntpq -p" is attached in file "ntpq-p".
> 
> I also did a tcpdump earlier this day as told in the bugtracker. Find
> the parts containing "ntpd" attached in file "tcpdump".

I already got these files, thank you

I asked a strace of the ntpd daemon, since we now know frames are
delivered to the application. I want to check what ntpd does of these
frames, since apparently it gives no answer.






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