Confirmed on current lucid as well.
If the router advertisement fails for some reason, configuration of the network just fails even if an ipv4 via dhcp is assigned:
Apr 19 14:59:37 faui44a NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Get) complete. Apr 19 14:59:37 faui44a dhclient: bound to 131.188.34.129 -- renewal in 1747 seconds. Apr 19 14:59:48 faui44a NetworkManager: <info> Device 'eth0' IP6 addrconf timed out or failed. Apr 19 14:59:48 faui44a NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP6 Configure Timeout) scheduled... Apr 19 14:59:48 faui44a NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP6 Configure Timeout) started... Apr 19 14:59:48 faui44a NetworkManager: <info> (eth0): device state change: 7 -> 9 (reason 5) Apr 19 14:59:48 faui44a NetworkManager: <info> Marking connection 'auto' invalid.
Confirmed on current lucid as well.
If the router advertisement fails for some reason, configuration of the network just fails even if an ipv4 via dhcp is assigned:
Apr 19 14:59:37 faui44a NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Get) complete.
Apr 19 14:59:37 faui44a dhclient: bound to 131.188.34.129 -- renewal in 1747 seconds.
Apr 19 14:59:48 faui44a NetworkManager: <info> Device 'eth0' IP6 addrconf timed out or failed.
Apr 19 14:59:48 faui44a NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP6 Configure Timeout) scheduled...
Apr 19 14:59:48 faui44a NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP6 Configure Timeout) started...
Apr 19 14:59:48 faui44a NetworkManager: <info> (eth0): device state change: 7 -> 9 (reason 5)
Apr 19 14:59:48 faui44a NetworkManager: <info> Marking connection 'auto' invalid.