RE: speaking of getting hacked.

> Macs do an odd zeroconf thing where they assign themselves a 
> link-local address if they can't get a DHCP (or whatever) 
> response. This is normal.

Windows machines will do the same if they cannot find a dhcp server.
 
> I'm not sure why they'd be talking to random network (rather than
> host) addresses, though.  Are you sure it wasn't talking to a 
> multicast group? Rendezvous (aka Bonjour, mDNS) runs on 
> 224.0.0.251, port 5353. Other multicast stuff would be in the 
> range [224-239].*.*.*.*.
> If it was actually sending packets to 24.0.0.0 that seems 
> really weird. As it happens that block is owned by Comcast.

Likely, he was refering to a multicast range.

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