DHCP doesn't get an address automatically after ifconfig --delete

[jackburton]

• Working network interface, connected and in DHCP
• ifconfig --delete <interfacename>
• ifconfig <interfacename> up

I would expect that the network interface gets its IP address from DHCP, again. The network preflet will show IPV4 configured in DHCP, but the network interface will be unconfigured. To configure it again, select mode: Disabled, then DHCP.

[pulkomandy]

Does it work if you force re-negociating?

ifconfig <interfacename> auto-config

[jackburton]

Yep, that works. However, here's another fail situation: Open the network preflet, disable an interface, re-enable it again. As you can see from the screenshots, the interface looks like it's configured, but network is still down. The "Renegotiate" button is disabled. ifconfig <interfacename> auto-config still works, though.

[vidrep]

Replying to jackburton:

Yep, that works. However, here's another fail situation: Open the network preflet, disable an interface, re-enable it again. As you can see from the screenshots, the interface looks like it's configured, but network is still down. The "Renegotiate" button is disabled. ifconfig <interfacename> auto-config still works, though.

I believe that fault is covered in ticket #11938.