Whose fault is it? My misconfiguration or Linux being dumb?
Aug 17 13:24:48 bigip kernel: arp info overwritten for 66.150.15.140 by 00:e0:81:01:e9:33
Aug 17 13:32:51 bigip kernel: arp info overwritten for 66.150.15.140 by 00:d0:b7:c5:90:2d
Aug 17 13:32:51 bigip kernel: arp info overwritten for 66.150.15.140 by 00:e0:81:01:e9:33
Aug 17 13:38:26 bigip kernel: arp info overwritten for 66.150.15.140 by 00:d0:b7:c5:90:2d
Aug 17 13:38:26 bigip kernel: arp info overwritten for 66.150.15.140 by 00:e0:81:01:e9:33
Aug 17 13:43:50 bigip kernel: arp info overwritten for 66.150.15.140 by 00:d0:b7:c5:90:2d
Kernel is 2.2.18.
$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:D0:B7:C5:90:2D
inet addr:10.0.0.15 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:72235483 errors:0 dropped:0 overruns:0 frame:0
TX packets:89740496 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:18 Base address:0xfc40 Memory:c0862000-c0862c40
eth1 Link encap:Ethernet HWaddr 00:E0:81:01:E9:33
inet addr:66.150.15.140 Bcast:66.150.15.159 Mask:255.255.255.224
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:17990789 errors:0 dropped:0 overruns:0 frame:0
TX packets:3437714 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:23 Base address:0xf0c0 Memory:c0864000-c0864c40 