@iox: Thanks. It's possible that there are multiple problems on your system but at least we have found one bug: /etc/ppp/ip-up.d/000resolvconf was registering the nameserver addresses for your 3G connection but when NetworkManager establishes the connection only it should do the registering. And I am happy to be able to say that the bug has been fixed in resolvconf 1.67ubuntu2, released by Stéphane Graber yesterday. Please upgrade to this new release of resolvconf and test again. If resolving still doesn't work properly then we'll do some more debugging.
@iox: Thanks. It's possible that there are multiple problems on your system but at least we have found one bug: /etc/ppp/ ip-up.d/ 000resolvconf was registering the nameserver addresses for your 3G connection but when NetworkManager establishes the connection only it should do the registering. And I am happy to be able to say that the bug has been fixed in resolvconf 1.67ubuntu2, released by Stéphane Graber yesterday. Please upgrade to this new release of resolvconf and test again. If resolving still doesn't work properly then we'll do some more debugging.