/me puts hand up.

Oh the tinkering.

56k POTS, IPChains, Them dodgy Intel NIC's, ADSL PPPoE, IPTables, Bonding, 802.1q VLANs, DSCP tc classes, Squid, Bind, MRTG, Cacti, IMQ Ingress Shaping kernel patch, Radius, Sendmail. I could go on for hours.

You break it? You fix it! Best self-schooling I'd ever had.