Ubuntu
network-manager package

  1. Bug #1608646
  2. Comment #13

Comment 13 for bug 1608646

Revision history for this message
Michael Gale (mishagale) wrote :

I'm not sure if this is actually the same bug, but I fixed an issue with the same symptoms, documenting here for the sake of those who come after me:

The NetworkManager tool asks you to input a subnet mask in "dotted-quad" format, however, if you look at the config file created for the connection in /etc/NetworkManager/system-connections, you see that it converts it to /CIDR notation.

However, I had input some routes which didn't actually properly map to a CIDR network specification, which was causing the ip-route add command to fail with an "RTNETLINK answers: Invalid argument" error message.

Correcting or removing these routes fixed my issue.