We’ve recently been away, so the Internet connection here was turned off. I use no-ip.com dynamic DNS to run a few services here and access from the internet, but since I started using the Cisco router I hadn’t got the dynamic DNS updates right that should update no-ip when the connection comes up (as Virgin Media won’t give me a fixed IP), so today I finally got sick of having to manually update with a PC and fixed it. It turned out to be a bit of missing config for FastEthernet4, and a simple typo in the URL, found by using

debug ip ddns update

and

show logs

to display what was happening. The debug can be turned off with

no debug ip ddns update


While I was there I set up NTP client and server, since the router was convinced it was May 2002.

It’s been a while since I did some proper geekery….