Should dhclient be the default when used with NetworkManager?

af7567 · 07-17-2016, 08:44 AM

I just upgraded a laptop from 14.1 to 14.2 and couldn't get it to connect to the internet. It took me a while to remember a problem I had before where dhcpcd* doesn't work with DHCPv6 and so if DHCPv6 is active on the network then NetworkManager will just fail over and over again.

Code:

Jul 17 14:21:25 stone NetworkManager[1082]: <warn>  [1468761685.1604] dhcp6 (eth0): the dhcpcd backend does not support IPv6
Jul 17 14:21:25 stone NetworkManager[1082]: <warn>  [1468761685.1616] device (eth0): Activation: failed for connection 'Ethernet connection 1'

Since NetworkManager in 14.2 uses conf.d for its settings now it wasn't using my old DHCP client settings from 14.1 and had reverted to dhcpcd.

Shouldn't the default DHCP client in the NetworkManager 00-dhcp-client.conf file be dhclient to stop this happening? Or am I the only person in the world using DHCPv6

?

(* It might actually just be that NetworkManager doesn't think dhcpcd support DHCPv6)

allend · 07-17-2016, 11:19 AM

An alternative point of view.

af7567 · 07-17-2016, 11:44 AM

Quote:

Originally Posted by allend

An alternative point of view.

Thanks, I didn't know someone had suggested swapping to dhclient as default before.

I think the problem is actually with network manager though which doesn't know that dhcpcd does support DHCPv6. IPv6 is becoming a lot more common now and this problem is probably going to come up a lot.

It doesn't just affect IPv6, it also stops IPv4 working too because network manager keeps bringing the whole connection up and down.