[Bug 872824] Re: Network-manager locks up when adding strongSwan VPN connection

[Richard Laager]

I'm running Precise. The 'Pass "lo" as faked tundev to NM' patch results
in Network Manager setting a 172.16.X.X IP on "lo" on VPN connect. Since
this replaces 127.0.0.1, other software breaks. Then, on VPN
disconnection, Network Manager takes "lo" down.

This can be trivially confirmed by running "ifconfig lo" before doing
anything, after connecting a VPN, and again after disconnecting the VPN.
Can someone on Trusty or higher test this?

Things work great if I change it to use "dummy0", but that requires
configuring a dummy0 interface, so that's not a usable solution for the
package. Has anyone looked into just fixing Network Manager to not
require an interface?

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https://bugs.launchpad.net/bugs/872824

Title:
  Network-manager locks up when adding strongSwan VPN connection

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