One command to start interface in dhcp mode?

[GoldenBigun]

Isn't there a CLI command in Linux to start an interface in dhcp mode? Like ip up eth1 dhcp?

I thought I read that on the STH forums but I can't find it and googlefu is not working for me.

 

[wsuff]

What distribution are you using? It tends to vary slightly. Also do you plan to change this permanently for that interface? If so changing your interface config setting & restarting networking might be best.

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[wsuff]

Dhclient used to be the userland command for dhcp but haven't needed to run it directly due to system network management tools in recent distributions.

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[GoldenBigun]

What distribution are you using? It tends to vary slightly. Also do you plan to change this permanently for that interface? If so changing your interface config setting & restarting networking might be best.

Sent from my Nexus 6P using Tapatalk

Normally CentOS but in this case I have to do a bunch of Ubuntu servers.

I don't need these to survive reboot, just bring up network once with DHCP address.

 

[wsuff]

I usually just edit the /etc/sysconfig/networking-scripts/ifcfg-eth0 and set
BOOTPROTO=dhcp

but dhclient eth0 should probably also function for 1 off use.