Description of problem: In /etc/dhclient.conf I have both append domain-name " my.domain.com" append domain-search " my.domain.com" Neither of these domains actually get appended to /etc/resolv.conf. I'm not sure if there's a more NetworkManager-centric way to get these appended, or if NetworkManager should be calling /etc/dhclient-script to handle this kind of situation.
The behaviour of dhclient has changed which is causing this symptom. In the past, domain-name was used to set domain-search. Now there's a separate option for that. Closing Notabug.