[Something Wrong, Hardware Problem? Burned Ethernet?]

I've just upgraded from version 2.8.1 to 3.0.0 and I'm now experiencing this very same issue.

BusyBox v1.19.4 (2013-05-05 14:06:49 BST) built-in shell (ash)
Enter 'help' for a list of built-in commands.

ATTITUDE ADJUSTMENT (MK4 Ver. 3.0)
WiFi_Pineapple MKIV

root@Pineapple:~# uname -a
Linux Pineapple 3.3.8 #32 Fri Aug 2 02:20:15 BST 2013 mips GNU/Linux

Where in dmesg it constantly repeats:

[ 2417.110000] br-lan: received packet on eth0 with own address as source address
[ 2418.110000] br-lan: received packet on eth0 with own address as source address
[ 2419.110000] br-lan: received packet on eth0 with own address as source address
[ 2422.110000] br-lan: received packet on eth0 with own address as source address
[ 2423.110000] br-lan: received packet on eth0 with own address as source address
[ 2424.110000] br-lan: received packet on eth0 with own address as source address
[ 2427.120000] br-lan: received packet on eth0 with own address as source address
[ 2428.120000] br-lan: received packet on eth0 with own address as source address
[ 2429.120000] br-lan: received packet on eth0 with own address as source address
[ 2432.120000] br-lan: received packet on eth0 with own address as source address
[ 2433.120000] br-lan: received packet on eth0 with own address as source address
[ 2434.120000] br-lan: received packet on eth0 with own address as source address
[ 2437.130000] br-lan: received packet on eth0 with own address as source address
[ 2438.130000] br-lan: received packet on eth0 with own address as source address
[ 2439.130000] br-lan: received packet on eth0 with own address as source address
[ 2442.130000] br-lan: received packet on eth0 with own address as source address
[ 2443.130000] br-lan: received packet on eth0 with own address as source address
[ 2444.130000] br-lan: received packet on eth0 with own address as source address
[ 2447.140000] br-lan: received packet on eth0 with own address as source address
[ 2448.140000] br-lan: received packet on eth0 with own address as source address
[ 2449.140000] br-lan: received packet on eth0 with own address as source address
[ 2452.140000] br-lan: received packet on eth0 with own address as source address
[ 2453.140000] br-lan: received packet on eth0 with own address as source address
[ 2454.140000] br-lan: received packet on eth0 with own address as source address
[ 2463.150000] br-lan: received packet on eth0 with own address as source address
[ 2464.150000] br-lan: received packet on eth0 with own address as source address
[ 2465.150000] br-lan: received packet on eth0 with own address as source address

I found that users of open-wrt have reported similar issues before.

One thread in particular was: "http://www.open-mesh.org/issues/170".

A temporary workaround was to disable distributed_arp_table.

A possible fix was mentioned by applying: 666-make-DAT-drop-ARP-requests-targeting-loca.patch