Hi, Following patch parallelizes ifnet.if_addrhead accessing Change ifnet.if_addrhead is serialized by netisr0 Please review it: http://leaf.dragonflybsd.org/~sephe/ifaddr.diff5 I have run this patch on all of my boxes for ~one month, so it should be safe to test, if your box is not two miles away from you :) Best Regards, sephe -- Live Free or Die