First day back at work. Some stuff broke in my absence, so I started submitting Sun service requests. After that I started debugging a weird problem with a Netgear FSM726S managed switch. Some packets seem to end up on the wrong vlan (probably due to the router having the same ethernet address on all vlans). Newer firmware should fix this (why they deliver them with ancient firmware is another question), but the only way to upload firmware is via tftp, via the network, at boot-time, which clashed with the current config (since we do use vlans a lot). Lots of short network outages, and a real broadcast storm, but no success upgrading the firmware.