How do I clear and re-execute a dhcp request

[mortre]

I know how to do this in windows. From the cmd promt you type
IPCONFIG /RELEASE (clears any net info gained through DHCP)
IPCONFIG /RENEW (performs a new dhcp request)

I ask this because I switch between 2 different dhcp network and usually don't turn the laptop off when going from 1 to the other. Its only like a 5 minute walk. So does slack have a similar way to do this, I tried reading the man page on dhcpd but no matter what I do I just get a list of copyright information or something similar. Not to mention there are no switches listed in the man page to release or renew a new dhcp request.

[sarumont]

Run one of these on your interface (assuming eth0 in the examples):

dhclient eth0
dhcpcd eth0
pump eth0

I put them in the most common order that I've found.