Anyone have any idea why the BBox is blasting my network with constant ARP requests?
I started wondering why my router lights would suddenly start all going off at once and began doing some network digging. Didn't take long to find what was going on.
Every so often the BBox, even while in sleep-mode, will hammer my internal lan with requests for address of my entire net block.
My lan is setup to only use x.x.x.100-110, yet the Bbox sends out a flurry of activity every 5 minutes or so requesting information for x.x.x.1-254.
They're small packets, so it's not like they get in the way or anything, but I'd just like to know the reason why it's doing that and if I can turn it off.
If I have to, I'll just configure my firewall to drop these packets as they're generated, but I'd rather have a way to stop the BBox from making the requests at all.
Sample output from a tcpdump. (x.x.x.102 is the BBox)
tcpdump -i eth0 -l -n arp
20:11:43.899064 ARP, Request who-has x.x.x.181 tell x.x.x.102, length 46
20:11:44.027131 ARP, Request who-has x.x.x.172 tell x.x.x.102, length 46
20:11:44.067083 ARP, Request who-has x.x.x.177 tell x.x.x.102, length 46
20:11:44.107095 ARP, Request who-has x.x.x.182 tell x.x.x.102, length 46
20:11:44.235095 ARP, Request who-has x.x.x.173 tell x.x.x.102, length 46
20:11:44.275116 ARP, Request who-has x.x.x.178 tell x.x.x.102, length 46
20:11:44.315140 ARP, Request who-has x.x.x.183 tell x.x.x.102, length 46
20:11:44.443112 ARP, Request who-has x.x.x.174 tell x.x.x.102, length 46
20:11:44.483114 ARP, Request who-has x.x.x.179 tell x.x.x.102, length 46
20:11:44.523130 ARP, Request who-has x.x.x.184 tell x.x.x.102, length 46
20:11:44.651131 ARP, Request who-has x.x.x.175 tell x.x.x.102, length 46