integrate with NetworkManager

[Andrew Schulman]

Binary package hint: whereami

whereami 0.3.34-0.1, in Jaunty.

Steps to reproduce:
1. Install NetworkManager and whereami.
2. Use NetworkManager to bring up or reconfigure an interface.

What should happen: whereami gets run, via /etc/dhcp3/dhclient-exit-hooks.d/whereami.

What does happen: whereami doesn't run.

The problem it seems, is that when NetworkManager invokes dhclient, it specifies its own custom dhclient script (/usr/lib/NetworkManager/nm-dhcp-client.action), which doesn't run the usual dhclient enter and exit hook scripts. It only runs the scripts in /etc/NetworkManager/dispatcher.d. This problem is described at https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/293139 and http://ubuntuforums.org/showthread.php?p=6748706.

Since the bug against NetworkManager is tagged "wontfix", it seems that the best solution for whereami will be to provide a NetworkManager dispatch script, that calls whereami. I haven't worked out the details of this but it looks simple enough. If I create one I'll post it here.

Thanks,
Andrew.

[Andrew Schulman (andrex)]

Here's my NetworkManager integration script. It works for me: with this script installed as /etc/NetworkManager/dispatcher.d/whereami and executable, whereami now gets called whenever NM reconfigures an interface. Note a couple of issues:

* NM doesn't offer the same variety of operations and network state as dhclient-- we just get (post-)up or down, and the name of the interface.

* I'm not sure if I gave the right --hint values. Those could be adjusted.