We have seen that behavior from misbehaving sonic wall (firewall) and some implementations of consumer firewalls (Watchguard, Sonicwall etc) will do this when the proxy arp is set to be on.
Regards. Faisal Imtiaz Snappy Internet & Telecom 7266 SW 48 Street Miami, FL 33155 Tel: 305 663 5518 x 232 Help-desk: (305)663-5518 Option 2 or Email: [email protected] > From: "Cameron Crum" <[email protected]> > To: [email protected] > Sent: Sunday, February 12, 2017 1:01:51 PM > Subject: Re: [AFMUG] odd mt behavior > yeah...tracked it to arp table full...something is flooding the arp list with > every unused ip. > On Fri, Feb 10, 2017 at 10:21 PM, Jesse Dupont < > [email protected] > > wrote: >> If the UBNT CPEs are M series (XM or XW), is WDS enabled on both the APs and >> CPEs? >> On Fri, Feb 10, 2017 at 12:28 PM -0700, "Cameron Crum" < [email protected] > >> wrote: >>> I have a customer who is having an odd issue on several MTs. His DHCP >>> server is >>> using radius to auth end users. The mac requests a lease, radius replies >>> with >>> accept and a Framed-IP, but the lease in the dchp server just says offered >>> and >>> never binds the lease. It is not with every customer, but it seems to >>> happening >>> randomly on several routers. version is 6.36. I had them look to see if was >>> a >>> particular end user router brand, or even the same type of cpe, but other >>> than >>> all cpe's being some flavor of ubnt set up in bridge mode, there doesn't >>> seem >>> to be a pattern. The dhcp server is set up on a bridge interface in the MT, >>> add >>> arp for leases, reply-only. I'm out of ideas on what would cause this. The >>> ip >>> is within the range of ips assigned to the interface. IP Pools is set to >>> static >>> only. Anyone seen this before?
