Normally that would be an effect of ARP trying to find a IP but not locating it, thus no MAC entry for it. At first glance I would say it was just a leaky IP, but it might be more then that.
On Thu, Sep 9, 2010 at 8:38 AM, Greg Ihnen <[email protected]> wrote: > Thanks! It's a satellite internet feed from a company here in Venezuela. We > have a 201.222.12.x/30. The wireless client to that NS2L AP does use a VPN > (Witopia), but the VPN doesn't give out public IPs. I also use Witopia and I > just connected and no new or strange ARP entries appeared. > > What I see on all my APs here is the only ARP entries I ever see are the > router and me when I log into the AP. > > The MT Router's ARP table agrees with the clients' IP addresses and MAC > addresses and that strange entry isn't there. > > How could the ARP table have a MAC address of all zeros? > > Thanks! > Greg > > On Sep 9, 2010, at 10:41 AM, Jeromie Reeves wrote: > >> How is this site feed, that is a cable service IP. Have you cross >> checked the wireless connect list with the arp list to see if all >> connected clients have valid IPs? I some times see funny ARP entries >> for static IP's and for IPs that leak client networks. Sometimes MTs >> hotspot will show website IP's as being local. >> >> On Thu, Sep 9, 2010 at 7:43 AM, Greg Ihnen <[email protected]> wrote: >>> I posted this to the UBNT list and haven't gotten a hit yet. >>> >>> I have an NS2L serving as an AP plugged into a MT 750. It's acting >>> strangely (wireless clients stay connected but periodically lose >>> connectivity so I started looking around. In the ARP table I found this: >>> >>> >>> IP Address MAC address Interface >>> 192.168.7.2 00:25:00:49:E5:6B BRIDGE >>> 24.56.178.140 00:00:00:00:00:00 BRIDGE >>> >>> >>> The network is 192.168.7.0/24. The MT doesn't show the 24.56.178.140 >>> address, nor does any of the other equipment on the network. A reboot >>> doesn't clear the 24.56.178.140 address from the arp table. The MT's >>> connections list doesn't show 24.56.178.140. >>> >>> Anyone have any ideas? >>> >>> >>> -------------------------------------------------------------------------------- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/ >>> -------------------------------------------------------------------------------- >>> >>> WISPA Wireless List: [email protected] >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> Archives: http://lists.wispa.org/pipermail/wireless/ >>> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: [email protected] >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
