That route tells it to just send packets for any IP directly out the interface, this is usefull because in a LAN using zeroconf LL IPs (as avahi-autoipd), only hosts without another non-LL ip should have an LL ip.
So without a default (last resort) route out the interface, if you only had an LL ip you would not be able to communicate with other hosts that didn't have an LL ip. -- avahi-autoipd gives me an useless default route https://launchpad.net/bugs/99489 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
