netdev - Re: regression when connecting to ipv6 localhost

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Message-ID: <CAO_aot6w9yaWacK9kE66m+Lv0LWXY9hKzLH8b=1dp=23fo_W2A@mail.gmail.com>
Date:	Sun, 14 Oct 2012 23:21:50 +0200
From:	Jan Hinnerk Stosch <janhinnerk.stosch@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org
Subject: Re: regression when connecting to ipv6 localhost

2012/10/14 Eric Dumazet <eric.dumazet@...il.com>:
> On Sun, 2012-10-14 at 22:39 +0200, Jan Hinnerk Stosch wrote:
>
>> ntpd    368  ntp   16u     IPv4              10453      0t0    UDP *:ntp
>> ntpd    368  ntp   17u     IPv6              10454      0t0    UDP *:ntp
>> ntpd    368  ntp   18u     IPv4              10460      0t0    UDP
>> localhost.localdomain:ntp
>> ntpd    368  ntp   19u     IPv4              10461      0t0    UDP
>> hinniepc.fritz.box:ntp
>> ntpd    368  ntp   20u     IPv6               8775      0t0    UDP
>> [fe80::922b:34ff:fe33:c292]:ntp
>> ntpd    368  ntp   21u  netlink                         0t0  10463 ROUTE
>
> Hmm, your ntpd doesnt listen normally to ::1 UDP 123
>
> grep ntpd /var/log/syslog :
>
> (Here I have : )
>
> ntpd[4912]: ntpd 4.2.6p3@...290-o Mon Aug 20 15:15:21 UTC 2012 (1)
> ntpd[4913]: proto: precision = 0.980 usec
> ntpd[4913]: ntp_io: estimated max descriptors: 1024, initial socket
> boundary: 16
> ntpd[4913]: Listen and drop on 0 v4wildcard 0.0.0.0 UDP 123
> ntpd[4913]: Listen and drop on 1 v6wildcard :: UDP 123
> ntpd[4913]: Listen normally on 2 lo 127.0.0.1 UDP 123
> ntpd[4913]: Listen normally on 3 eth1 172.30.42.8 UDP 123
> ntpd[4913]: Listen normally on 4 lo ::1 UDP 123
> ntpd[4913]: Listen normally on 5 eth1 fe80::222:15ff:fe87:3ff6 UDP 123
> ntpd[4913]: peers refreshed
> ntpd[4913]: Listening on routing socket on fd #22 for interface updates
>
>

Ah, ok. Didn't read correctly..

journalctl /usr/bin/ntpd gives:
Oct 14 16:51:22 hinniepc ntpd[368]: proto: precision = 0.117 usec
Oct 14 16:51:22 hinniepc ntpd[368]: ntp_io: estimated max descriptors:
1024, initial socket boundary: 16
Oct 14 16:51:22 hinniepc ntpd[368]: Listen and drop on 0 v4wildcard
0.0.0.0 UDP 123
Oct 14 16:51:22 hinniepc ntpd[368]: Listen and drop on 1 v6wildcard :: UDP 123
Oct 14 16:51:22 hinniepc ntpd[368]: Listen normally on 2 lo 127.0.0.1 UDP 123
Oct 14 16:51:22 hinniepc ntpd[368]: Listen normally on 3 eth0
192.168.178.27 UDP 123
Oct 14 16:51:22 hinniepc ntpd[368]: Listen normally on 4 lo ::1 UDP 123
Oct 14 16:51:22 hinniepc ntpd[368]: peers refreshed
Oct 14 16:51:22 hinniepc ntpd[368]: Listening on routing socket on fd
#21 for interface updates

and the output of strace -p `pidof ntpd` is in file "stracentpd".

Download attachment "stracentpd" of type "application/octet-stream" (5184 bytes)