Public bug reported:

Binary package hint: dhcdbd

After installing NetworkManager it detects ethernet cable and wireless
networks. But when registering in the network, NetworkManager fails to
receive IP from DHCP server.

Here is the part of /var/log/syslog:
Jun 29 04:14:28 localhost NetworkManager: <information>^IActivation (eth0) 
Beginning DHCP transaction.
Jun 29 04:14:28 localhost NetworkManager: <information>^IActivation (eth0) 
Stage 3 of 5 (IP Configure Start) complete.
Jun 29 04:14:28 localhost NetworkManager: <information>^IDHCP daemon state is 
now 12 (successfully started) for interface eth0
Jun 29 04:14:29 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 
port 67 interval 3
Jun 29 04:14:29 localhost dhclient: DHCPOFFER from 172.16.0.1
Jun 29 04:14:29 localhost dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 
67
Jun 29 04:14:29 localhost dhclient: DHCPACK from 172.16.0.1
Jun 29 04:14:29 localhost dhclient: bound to 172.16.0.12 -- renewal in 265757 
seconds.
Jun 29 04:14:37 localhost kernel: [17439882.524000] eth0: no IPv6 routers 
present
Jun 29 04:15:13 localhost NetworkManager: <information>^IDevice 'eth0' DHCP 
transaction took too long (>45s), stopping it.
Jun 29 04:15:13 localhost dhclient: DHCPRELEASE on eth0 to 172.16.0.1 port 67
Jun 29 04:15:14 localhost NetworkManager: <information>^IActivation (eth0) 
Stage 4 of 5 (IP Configure Timeout) scheduled...
Jun 29 04:15:14 localhost NetworkManager: <information>^IDHCP daemon state is 
now 14 (normal exit) for interface eth0
Jun 29 04:15:14 localhost NetworkManager: <information>^IDHCP daemon state is 
now 14 (normal exit) for interface eth0
Jun 29 04:15:14 localhost NetworkManager: <information>^IActivation (eth0) 
Stage 4 of 5 (IP Configure Timeout) started...
Jun 29 04:15:14 localhost NetworkManager: <information>^INo DHCP reply 
received. Automatically obtaining IP via Zeroconf.
Jun 29 04:15:14 localhost NetworkManager: <information>^Iautoip: Sending probe 
#0 for IP address 169.254.108.117.
Jun 29 04:15:14 localhost NetworkManager: <information>^Iautoip: Waiting for 
reply...

As you see, dhclient detects IP correctly (172.16.0.12), but
NetworkManager fails to accept this IP and uses 169.254.108.117 instead.
This results in non-working network connection, so I have to manually
run dhclient and get a correct IP.

** Affects: dhcdbd (Ubuntu)
     Importance: Untriaged
         Status: Unconfirmed

-- 
NetworkManager doesn't understand DHCP
https://launchpad.net/bugs/51283

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