nm-online returns too early

[Vihai]

I am setting up a totem system which mounts a remote file system at boot and starts an application from it.

I found that randomly the boot fails because the mount fails due to "Network unreachable" errors.

I made sure the mount unit waits for network-online.target to be rached, however I found that NetworkManager-wait-online.service returns well before the IP address has been obtained by DHCP.

This is a cleaned up log extract:

apr 19 02:22:13 terminale2 systemd[1]: Starting Network.
apr 19 02:22:13 terminale2 NetworkManager[660]: <info> (eth2): carrier is OFF
apr 19 02:22:13 terminale2 NetworkManager[660]: <info> (eth2): new Ethernet device (driver: 'r8169' ifindex: 2)
apr 19 02:22:13 terminale2 NetworkManager[660]: <info> (eth2): exported as /org/freedesktop/NetworkManager/Devices/1
apr 19 02:22:13 terminale2 NetworkManager[660]: <info> (eth2): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
apr 19 02:22:13 terminale2 systemd[1]: Starting Network Manager Wait Online...
apr 19 02:22:13 terminale2 NetworkManager[660]: <info> (eth2): preparing device
apr 19 02:22:18 terminale2 NetworkManager[660]: <info> startup complete
apr 19 02:22:18 terminale2 systemd[1]: Started Network Manager Wait Online.
apr 19 02:22:18 terminale2 systemd[1]: Reached target Network is Online.
                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
apr 19 02:22:18 terminale2 systemd[1]: Starting Network is Online.
apr 19 02:22:18 terminale2 systemd[1]: Mounting /nas...
apr 19 02:22:18 terminale2 mount[810]: mount error(101): Network is unreachable

Then after a while:

apr 19 02:22:26 terminale2 NetworkManager[660]: <info> Activation (eth2) successful, device activated.

Attached you find the whole journal.

[Vihai (daniele-orlandi)]

Note that I'm working with vivid and network-manager 0.9.10.0-4ubuntu15 with systemd.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.