2010/1/15 James Tait <[email protected]>: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Colin Law wrote: >>>> I have looked for clues as to why the DNS settings might be >>>> disappearing but have not found anything logged anywhere, suggestions >>>> as to where to look for information would be much appreciated. Or any >>>> other ideas for that matter. > > DHCP transactions or normally logged by dhclient in /var/log/syslog. > You should be able to grep for dhclient and see what IP address you've > been offered and by what server. Also, NetworkManager logs the DHCP > information it gets in the same file.
Got that, thanks, I am not sure why I did not see those when I initially looked. > >> I suppose one possibility is that when the PC asks for the lease to be >> renewed the router is not providing the DNS correctly. That seems an >> odd sort of fault however. It has only recently started happening. > > It sounds a bit like you may be getting a lease from a different server > on your network. Has anything recently been added to the network that > could be acting as a DHCP server? A new computer, router, access point? There is just the laptop that is seeing the problem and two other Ubuntu PCs on fixed ip addresses (plus the router). I have recently added one of these PCs so I suppose I may have accidentally enabled a dhcp server on it, though not sure how. I will disable dhcp in the router and see if the laptop finds a server. Otherwise I will wait till it fails again and see what is in the log. Thanks Colin -- [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.ubuntu.com/UKTeam/
