ODHIAMBO Washington wrote:
* Bill Moran <[EMAIL PROTECTED]> [20030613 18:36]: wrote:
ODHIAMBO Washington wrote:
My log files (and console) fill up with these messages.
arp: 62.8.64.172 moved from 00:c0:05:11:01:f1 to 00:c0:05:10:01:f1 on bge1
arp: 62.8.64.201 moved from 00:c0:05:10:01:f1 to 00:c0:05:11:01:f1 on bge1
arp: 62.8.64.201 moved from 00:c0:05:11:01:f1 to 00:c0:05:10:01:f1 on bge1
arp: 62.8.64.145 moved from 00:c0:05:11:01:f1 to 00:c0:05:10:01:f1 on bge1
arp: 62.8.64.212 moved from 00:c0:05:11:01:f1 to 00:c0:05:10:01:f1 on bge1
arp: 62.8.64.188 moved from 00:c0:05:11:01:f1 to 00:c0:05:10:01:f1 on bge1
Could be that you're on a DHCP network and addresses are moving around a
lot.
An ISP env, without a DHCP server, but with a NAS assigning IPs to dialup clients.
For all intents and purposes, that's the same as a DHCP server in it's affect
on arp.
'netstat -rn' should give you IPs and MAC addresses. You could monitor that to
get an idea of what the IPs are doing and possibly improve the configuration of
the NAS to reduce the problem.
There is a sysctl that will turn off reporting of this:
net.link.ether.inet.log_arp_movements
Set it to 0 to stop the logging.
Thanks. I was looking for something like this, but is this really available
in 4.8-STABLE ????
It's available earlier than that. I don't know exactly when it was added, but
it's definately in 4.8.
If you're the ISP, you may want to consider researching the problem before you
blindly turn this off. Although you could turn the messages off, put it on
your list of things to do, and turn them back on in a month or whatever when
you had more time to research the problem.
--
Bill Moran
Potential Technologies
http://www.potentialtech.com
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