Network controller does not get an IP address via DHCP

[Phil]

After starting Ubuntu the network controller does not get a valid IP address from the DHCP server. The device eth0 is configured correctly and physically present, but internet does not work. I have to restart that process manually by typing "sudo dhclient eth0" and then all works properly.

syslog says:

Jul 4 21:21:07 ubuntu NetworkManager: <info> eth0: Device is fully-supported using driver 'forcedeth'.
Jul 4 21:21:07 ubuntu NetworkManager: <info> nm_device_init(): waiting for device's worker thread to start
Jul 4 21:21:07 ubuntu NetworkManager: <info> nm_device_init(): device's worker thread started, continuing.
Jul 4 21:21:07 ubuntu NetworkManager: <info> Now managing wired Ethernet (802.3) device 'eth0'.
Jul 4 21:21:07 ubuntu NetworkManager: <info> Deactivating device eth0.
Jul 4 21:21:07 ubuntu avahi-daemon[4982]: Withdrawing address record for 192.168.0.1 on eth0.
Jul 4 21:21:07 ubuntu avahi-daemon[4982]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.0.1.
Jul 4 21:21:07 ubuntu avahi-daemon[4982]: Interface eth0.IPv4 no longer relevant for mDNS.
Jul 4 21:21:07 ubuntu avahi-daemon[4982]: Withdrawing address record for fe80::250:8dff:fed9:4db5 on eth0.

[jcfp (jcfp)]

Please don't re-submit previously reported bugs. Setting duplicate.