There I was happily surfing the net and I fell off.
Went to the router and it was showing Disconnected, Authentication failed.
I re-entered my password, just in case, and it sulked and I tried again and again and eventually it let me in.
The router log shows the following (Times are off by an hour because of the problem with the router forgetting summertime settings if you are using a time server):
[tt]
Info Sep 4 09:53:11 CONFIGURATION mbus igd sync successfull
Info Sep 4 09:52:54 CONFIGURATION mbus atomic sync successful
Info Sep 4 09:51:51 FIREWALL event (1 of 1): deleted rules
Info Sep 4 09:51:50 GRP Default destination is routed via gateway 212.159.61.36
Warning Sep 4 09:51:51 PPP link up (Internet) [212.159.61.36]
Info Sep 4 09:51:51 PPP CHAP Chap receive success : authentication ok
Info Sep 4 09:51:50 PPP CHAP Receive challenge (rhost = pcl-ag01)
Info Sep 4 09:51:48 PPP CHAP Receive challenge (rhost = ERX20.Birmingham4)
Error Sep 4 09:50:36 PPP CHAP authentication failed (Internet)
Info Sep 4 09:50:32 PPP CHAP Receive challenge (rhost = ERX20.Birmingham4)
Error Sep 4 09:49:38 PPP CHAP authentication failed (Internet)
Info Sep 4 09:49:38 PPP CHAP Receive challenge (rhost = ERX20.Birmingham4)
Error Sep 4 09:48:24 PPP CHAP authentication failed (Internet)
Info Sep 4 09:47:55 PPP CHAP Receive challenge (rhost = ERX20.Birmingham4)
Error Sep 4 09:47:39 PPP CHAP authentication failed (Internet)
Info Sep 4 09:47:38 PPP CHAP Receive challenge (rhost = ERX20.Birmingham4)
Error Sep 4 09:47:22 PPP CHAP authentication failed (Internet)
Info Sep 4 09:46:54 PPP CHAP Receive challenge (rhost = ERX20.Birmingham4)
Error Sep 4 09:46:38 PPP CHAP authentication failed (Internet)
Info Sep 4 09:46:37 PPP CHAP Receive challenge (rhost = ERX20.Birmingham4)
Error Sep 4 09:46:08 PPP CHAP authentication failed (Internet)
Info Sep 4 09:46:08 PPP CHAP Receive challenge (rhost = ERX20.Birmingham4)
Info Sep 4 09:45:16 FIREWALL event (1 of 1): created rules
Info Sep 4 09:45:15 GRP Default destination is not routed anymore via gateway 212.159.61.36
Warning Sep 4 09:45:15 PPP link down (Internet) [212.159.61.36] [/tt]
Can't be bothered raising a ticket but it looks like Something went a bit wrong somewhere as it only picked up when it stopped trying to authenticate against ERX20.Birmingham4 and went to pcl-ag01
