mac arp moved from-to DOS?

[Anuj Singh]

I am trying to find out the cause of no reply from the freebsd
machine, and why did it responded after restarting the network
services? The machine with 10.139.7.15 is some windows machine in
network.

So logs which i have here can not cause FreeBSD machine to stop
responding to the network traffic? what can be other causes on the OS
level?

Another thing I want to ask whether the default values of kernel
parameters are good enough for production level server, or we can make
some other changes to it. Currently I am running
clamav--->c-icap---->squid--->dansgurdain on this server.. since last
few weeks I never faced such problem..and don't want to follow the
alt+ctrl+del=widows methods of restarting server or any service


Thanks & Regards
Anuj Singh

On 4/3/09, Tom Ierna <tom at shockergroup.com> wrote:
> On Apr 3, 2009, at 7:11 PM, Anuj Singh wrote:
>> 4 03:23:19 fbsd7 kernel: arp: 10.139.7.15 moved from 00:22:19:ae:ea:0d
>> to 00:22:19:ae:ea:0f on age0
>> Apr  4 03:23:19 fbsd7 kernel: arp: 10.139.7.15 moved from
>> 00:22:19:ae:ea:0f to 00:22:19:ae:ea:0d on age0
>>
>> 10.139.7.15 is some windows machine...
>
>
> Does this Windows machine have two Ethernet cards plugged into the
> same network?
>
> It looks like your FreeBSD machine is seeing that IP address switch
> between two MAC addresses.
>
> This can be indicative of a network loop between the interfaces on the
> machine with that IP address, or a DHCP client fight.
>
> I've also seen this (harmlessly) manifest with certain FreeBSD
> firewalls in bridged mode.
>
> -Tom
>
>