Posted in troubleshooting on Dec 8th, 2024
TIL a DHCPv4 server can respond with two different TFTP boot-file-names in a single DHCPOFFER packet. And how the second filename can get corrupted with extra junk that shows up as a PXE client trying to download a slightly wrong file from your TFTP server. TL;DR: Supermicro UEFI firmware has dodgy PXE TFTP implementation, combined […]
Posted in troubleshooting on Nov 17th, 2024
Years behind schedule I finally got around to replacing ISC DHCP with Kea DHCP so I could finally have proper IPv6 host reservations. What I just learned, and should have learned years ago, that several of my motherboards such as the Supermicro A1SAi and Intel NUC while they support UEFI PXE booting, they do not […]
Posted in troubleshooting on Oct 26th, 2024
Here’s one for the future troubleshooting seekers. I was testing IPv4 UEFI PXE booting a Supermicro A1SAi motherboard after applying the Atom 2550 fix and couldn’t get the thing to load the network bootstrap program (NBP). I’m not at all saying this is the only reason for hitting a PXE-E99 error, this is just what […]
Posted in troubleshooting, vintage on Sep 24th, 2024
TL;DR: Controller said RAID1 was lost after disks being powered on for first time after 20 years, I didn’t believe it. Booted into Linux and dd’d the last good disk. Recovered the UFS filesystem, I have 20 year old artifacts to sift through. Always take images of your drives before mucking with them. The main […]
Posted in troubleshooting on Jul 28th, 2024
I was recently expanding my analog voice empire and noticed my Cisco ATA191 was blinking like it was rebooting, and coming back. Looking at logs it was indeed warm rebooting and SIP re-registering every few minutes. I ruled out a duplicate IP address, and it never missed a ping. I was wondering if the VoIP […]
Posted in troubleshooting on Dec 9th, 2023
I guess sometimes you have to challenge your assumptions and just try things. For years and years at home and and in Oklahoma I have been running Hurricane Electric’s Tunnelbroker tunnels to get IPv6 to my networks. At the time when I set them up, everything said the 6in4 tunnel (specifically IP protocol 41) wouldn’t […]
