Firewall died, taking down disk. New disk: clean install of Woody upgraded to testing. Two network cards: 3COM 3C905C 10/100M as (internal) card (eth0) 3COM Etherlink III as cable modem facing (external) card eth1.
Simple Iptables firewall. DHCP needs to work, as does ddtc for resolving dynamic addresses to .ddts.net. Now flooded with screens full of IN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:04:76:de:b9:53:08:00 SRC=0.0.0.0 DST=255,255,255,255 LEN=328 TOS=0x10 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=68 DPT=67 LEN=308 on all machines. Advice please - posting to debian-devel because I know I'll get some competence here! Andy