Public bug reported:
Step 1: Connect using Mobile Broadband (click on Next G item in NM applet)
resolv.conf then contains:
# Generated by NetworkManager
nameserver <ISPNAMESERVER1>
nameserver <ISPNAMESERVER2>
Step 2: Connect using Ethernet (click on Work item in NM applet)
resolv.conf then contains:
# Generated by NetworkManager
domain <WORKDOMAIN1>
search <WORKDOMAIN2>
nameserver <WORKNAMESERVER1>
nameserver <WORKNAMESERVER2>
nameserver <ISPNAMESERVER1>
# NOTE: the libc resolver may not support more than 3 nameservers.
# The nameservers listed below may not be recognized.
nameserver <ISPNAMESERVER2>
Step 3: Disconnect from Mobile Broadband (click on Disconnect item in NM applet)
resolv.conf then contains:
# Generated by NetworkManager
and nothing else.
Not sure if default routes are handled properly in this case either.
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
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resolv.conf ends up empty after disconnecting from one of two connections
https://bugs.launchpad.net/bugs/388797
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