Please describe the problem:
I will receive a domain search list from my DHCP server. I need these domain search list, because it has two entries and the "domain" option can have only one. I had a change to test it under MacOS and there it worked perfectly. Without NetworkManager (using a script the old way) it worked too.

According to RFC 3397 the option for this has the number 119 and the name
"dns-domain-search-list".


Steps to reproduce:
If you want to test it, you have to add the following lines to your DHCP server:

 dns-domain-search-list code 119 = string;
 option dns-domain-search-list "private.anders.local anders.local";
 
(I do not know, why not all offical options are supported by default, but it seems to be normal.)

Then reconnect via DHCP and take a look at the resolv.conf


Actual results:
Only the DHCP "domain" option is evaluated and taken as a search-list.

Expected results:
1. Set the "domain" in the resolv.conf (if it's unambiguous)
2. Set/Add the value(s) of the "dns-domain-search-list" in the resolv.conf as "search" list


Does this happen every time?
Yes

Other information:
See Launchpad Bugs (bugs.launchpad.net) "98618" and "111795" too.