> My home IP is 203.97.119.201 so anything outside of 203.97.119 should be > charged. Looks like their upstream router allows layer2 (arp etc) through > without charging, and probably broadcast layer 3 (dhcp/bootp)
Yes, and IGMP. Probably all the lower level "glue" protocols are uncharged. Hmm, how much data can fit into an arp packet...? > Interestingly, there are dhcp answers being handed out on the cable, by > 172.20.18.55 Put a non-log rule in [1]. I get IGMP from 172.16.0.5, which is in the 172.16/16 of my cable modem's HFC address [2], but not in its 172.../24. I assume it's from Telstra, if it's from a sad customer, Telstra shouldn't be routing it. But then I get udp 172.16.0.31:138 -> 172.16.0.255:138, hmmm. Volker [1] another thing ipcop can't do [2] Stick a static route 192.168.100.0/24 gateway x.y.z.1 (your gateway address) into your router and browse to 192.168.100.1 for your cable modem's config + status. Very handy! -- Volker Kuhlmann is list0570 with the domain in header http://volker.dnsalias.net/ Please do not CC list postings to me.
