A small update of my contentless ping script has now been released. First, it's a bit more configurable, thanks to some patches sent to me by way of Martin F. Krafft. Secondly, it now rate limits, so you can't get people kicked off channels by pinging them repeatedly.
Tollef Fog Heen's blog
tfheen Sun, 07 Jan 2007 - contentless_ping.pl 0.3 released
tfheen Tue, 02 Jan 2007 - Locally administrated MAC addresses
Russel Coker writes about using multiple Ethernet devices in Xen and wonders about if there is something similar to RFC1918 addresses, but for Ethernet. Apparently, there is, they're called "Locally Administered Addresses". To make a local address, just set the seventh bit to one. You probably want to make the eigth bit a zero too, unless it's a multicast address. Wikipedia has more, as usual.
