> We did (at 9:30am, minutes after the problem was detected). It didn't go > away. Now be an engineer and show us a trace. a bit hard when it is broken arp packets Jul 15 11:47:27 roam /kernel: arp: unknown hardware address format (0x0800) Jul 15 11:47:27 roam /kernel: arp: unknown hardware address format (0x0800) Jul 15 13:01:45 roam /kernel: arp: unknown hardware address format (0x0800) Jul 15 13:49:08 roam /kernel: arp: unknown hardware address format (0x0800) > The routers have a bug in their implementation of ARP. yet to be known > ARP, and our use of it, isn't experimental. your use of it was clearly demonstrated to have broken things this morning. we're just asking you to turn your stuff off so we can isolate the problem. thanks to lars for being cooperative and doing so. randy