After strange behavior while reconfiguring my DD-WRT on the LinkSys hardware I am using and even instabilities, I decided to upgrade to the recommended DD-WRT firmware for my WRT54GL model.
I have been using DD-WRT on that same router for years and also conducted several updates, but recently (over the past few months) the router’s behavior turned from stable to weird.
But it seems the latest upgrade procedure fixed the problems.
I recently used my MRTG to analyse some network problems at home. Since zooming felt not easy enough, I installed Cacti to monitor my DD-WRT interfaces (LAN, WLAN, DSL).
The same TFTP procedure used for the WHR-G125 also works for the ethernet connector. You just have to replace the default IP 192.168.11.1 of WHR-G125 with 22.214.171.124.
Another Buffalo router is running DD-WRT.
Initial flashing was not as simple on the WHR-G125 as it was on my Linksys router, so I collect some things worth remembering (your mileage may vary, if not using Linux).
Rollback to Buffalo’s original firmware is difficult, because you need an unencrypted version, which is not officially available. So, please be extra careful. I will not give any warranties, that this will always work, but at least it worked for me.