Public bug reported:

Hello, I have several WiFi networks with the option "saved for all
users" enabled on my laptop, meaning the config files are written to
/etc/NetworkManager. I use DHCP on all these networks, but one of them
has a misconfigured AP that assigns an incorrect DNS server; I've set
that one network to assign addresses only via the connection editor, and
inserted the required DNS info myself for said connection.

Here's the problem: my /etc/resolv.conf adds this manually added DNS
server and the search domain in front of any and all other DNS servers
that dhcp provides no matter what other network I've connected to. This
basically breaks my DNS.

I'm running 12.04.1 LTS on a 64-bit machine, no mods to the system or network 
stack, pretty much a pristine install. 
Network manager is 0.9.4.0-0ubuntu4.1

If there are any tests or info you'd like, please let me know.

Here is a copy of resolv.conf while connected to a network whose DNS is
supposed to be the router (192.168.2.1), edited for privacy:

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 134.74.***.***
nameserver 192.168.2.1
search ccny.cuny.edu local

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1050721

Title:
  DNS entries malformed

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