Two nics arp problem
Hi,
One week ago, I've installed potato on a digital as1000 4/266 (alpha)
The purpose for this machine is to become the bastion host of our network.
It's being prepared for the moment.
It has two nics that are recognized as follows:
eth0: Digital DC21041 Tulip rev 33 at 0x9800, 00:00:F8:10:71:D5, IRQ 16.
eth1: Digital DC21040 Tulip rev 36 at 0xa000, 00:00:F8:20:15:8D, IRQ 20
This server is on a /27 subnet for the moment, and both nics are in this subnet.
The problem is that, from time to time, the two nics seem to exchange their IP
address, and then I can't ping anymore in any of them already known by my
workstation except if I delete the entry of the arp table.
Here is one excerpt of my freebsd daily security check:
px20_115 kernel log messages:
/snip/
> arp: 193.190.234.49 moved from 00:00:f8:20:15:8d to 00:00:f8:10:71:d5 on de0
> arp: 193.190.234.49 moved from 00:00:f8:10:71:d5 to 00:00:f8:20:15:8d on de0
> arp: 193.190.234.35 moved from 00:00:f8:20:15:8d to 00:00:f8:10:71:d5 on de0
> arp: 193.190.234.35 moved from 00:00:f8:20:15:8d to 00:00:f8:10:71:d5 on de0
> arp: 193.190.234.35 moved from 00:00:f8:20:15:8d to 00:00:f8:10:71:d5 on de0
> arp: 193.190.234.35 moved from 00:00:f8:20:15:8d to 00:00:f8:10:71:d5 on de0
> arp: 193.190.234.35 moved from 00:00:f8:20:15:8d to 00:00:f8:10:71:d5 on de0
> arp: 193.190.234.35 moved from 00:00:f8:20:15:8d to 00:00:f8:10:71:d5 on de0
And the ifconfig result on the machine:
eth0 Link encap:Ethernet HWaddr 00:00:F8:10:71:D5
inet addr:193.190.234.35 Bcast:193.190.234.63 Mask:255.255.255.224
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:214601 errors:0 dropped:0 overruns:0 frame:0
TX packets:8715 errors:0 dropped:0 overruns:0 carrier:0
collisions:282 txqueuelen:100
Interrupt:16 Base address:0x9800
eth1 Link encap:Ethernet HWaddr 00:00:F8:20:15:8D
inet addr:193.190.234.49 Bcast:193.190.234.63 Mask:255.255.255.224
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:312458 errors:0 dropped:0 overruns:0 frame:0
TX packets:108339 errors:0 dropped:0 overruns:0 carrier:0
collisions:1555 txqueuelen:100
Interrupt:20 Base address:0xa000
The kernel is 2.2.16
Has someone an idea of where I should look at to find out what/where the real
problem is.
Thaks in advance
--
Marc Dubrowski
Kind of a Network Administrator
K.B.I.N.I.R.Sc.N.B.
29 rue Vautier B-1040 Brussels, Belgium
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