Strange network issue in freebsd 8

[Sherin George]

Hello Sam,

The problem happened today again.

I am getting this message on traceroute

===============
traceroute: findsaddr: write: No such process
================

When running a ping to 8.8.8.8, it says following.

===================
ping: sendto: No route to host
====================

Please see the result of "netstat -rn" command.

============
myserver# netstat -rn
Routing tables

Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            XXX.XXX.XXX.241     UGS        62   209247    em0
127.0.0.1          link#3             UH          0        0    lo0
XXX.XXX.XXX.240/29  link#1             U           0        0    em0
XXX.XXX.XXX.242     link#1             UHS         0        0    lo0

Internet6:
Destination                       Gateway                       Flags
Netif Expire
::1                               ::1                           UH
lo0
fe80::%lo0/64                     link#3                        U
lo0
fe80::1%lo0                       link#3                        UHS
lo0
ff01:3::/32                       fe80::1%lo0                   U
lo0
ff02::%lo0/32                     fe80::1%lo0                   U
lo0
=============

Note: I have replaced first three octets.

I have checked netstat -m also. It is also not showing any problem.

Could anyone please help me to sort out this issue.

--
Thanks,
Sherin

On Thu, Jan 28, 2010 at 6:29 AM, sam <sam at ip6.com.au> wrote:

> Hi,
>
> Is this problem still happening?
>
> Cheers
> Sam
>
>
> On 24/01/2010 2:16 PM, Sherin George wrote:
>
>> Hello,
>>
>> I am facing some sort of strange network issue in a freebsd server
>> occasionally.
>>
>> OS: FreeBSD 8.0-RELEASE - amd64
>>
>> Now, I have updated to FreeBSD 8.0-RELEASE-p2
>>
>> The servers loses network connection once in a few days. I logged into
>> console and verified that network is up. I even restarted network service
>> using following command.
>>
>> /etc/rc.d/netif restart
>>
>> Still, it didn't fix.
>>
>> I checked /var/log/messages, but I am not getting any clue.
>>
>> ==============
>> Jan 19 12:10:20 myserver kernel: GEOM_MIRROR: Device gm0: rebuilding
>> provider ad0 finished.
>> Jan 19 20:20:23 myserver nfsd[732]: select failed: Interrupted system call
>> Jan 19 20:21:07 myserver nfsd[732]: select failed: Interrupted system call
>> Jan 23 02:14:33 myserver login: ROOT LOGIN (root) ON ttyv0
>> Jan 23 02:19:51 myserver kernel: ifa_del_loopback_route: deletion failed
>> Jan 23 02:19:57 myserver kernel: em0: link state changed to DOWN
>> Jan 23 02:20:02 myserver kernel: em0: link state changed to UP
>> Jan 23 02:29:58 myserver reboot: rebooted by root
>> Jan 23 02:29:58 myserver syslogd: exiting on signal 15
>> Jan 23 02:31:31 myserver syslogd: kernel boot file is /boot/kernel/kernel
>> Jan 23 02:31:31 myserver kernel: Copyright (c) 1992-2009 The FreeBSD
>> Project.
>> Jan 23 02:31:31 myserver kernel: Copyright (c) 1979, 1980, 1983, 1986,
>> 1988,
>> 1989, 1991, 1992, 1993, 1994
>> Jan 23 02:31:31 myserver kernel: The Regents of the University of
>> California. All rights reserved.
>> Jan 23 02:31:31 myserver kernel: FreeBSD is a registered trademark of The
>> FreeBSD Foundation.
>> Jan 23 02:31:31 myserver kernel: FreeBSD 8.0-RELEASE #0: Sat Nov 21
>> 15:02:08
>> UTC 2009
>> Jan 23 02:31:31 myserver kernel: root at mason.cse.buffalo.edu:
>> /usr/obj/usr/src/sys/GENERIC
>> Jan 23 02:31:31 myserver kernel: Timecounter "i8254" frequency 1193182 Hz
>> quality 0
>> ==============
>>
>> Network, TCP stack all were up. It was pinging gateway even. But,
>> traceroute
>> was not going beyond gateway.
>>
>> I believe the issue is not related to anything outside server since a
>> reboot
>> always fixes the issue.
>>
>> I will be grateful for any advice that can help me in troubleshooting this
>> problem.
>>
>> --
>> Best Regards,
>> Sherin
>> _______________________________________________
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>>
>>
>>
>
>