@David-TP Thanks, I've got the email and have replied.

@David-TP I'm not really in a position to swap the location of the two X20s, but I do have some more information. The second X20 was connected on Ethernet port 1 to the first X20. If I move the cable...

@Alexandre. I'm trying to raise this as a bug report. Have I succeeded?

@Alexandre. Done. The effects I described are consistent.

@Alexandre. I would have thought the level of detail I provided of the troubleshooting I went through would suggest that I may have done this sort of thing once or twice before. There is no problem...

I have three X20s, the first connected to the WAN, the second connected to the first via Ethernet and a third connected over WiFi mesh. The second is close to the first so it can mesh if it tries,...