On Tue, Jun 4, 2013 at 6:34 PM, Mikael Abrahamsson <swm...@swm.pp.se> wrote: > http://www.nanog.org/sites/default/files/tues.general.Papandreou.conservation.24.pdf > > So my question is basically: What am I missing?
Both the router and host have to support sending and accepting invalid ARP requests. Since the Linux kernel already mishandles arp by default, you're probably begging for unexpected behavior. Double down on that if the customer controls the server image. I don't have any experience with softlayer but I have had to abandon a handful of VPS providers due to bizarre routing failures they couldn't fix. I was particularly thrilled with the one where if I didn't ping the second-hop router from each of the VPS's IPs at least once every 15 seconds it would eventually forget how to reach the address. I could log in via one of the other addresses and confirm with tcpdump that no arps or anything else would appear on the interface. Their advice? Disable iptables. Thanks guys, real helpful. -Bill -- William D. Herrin ................ her...@dirtside.com b...@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
