[olug] dhcpcd vs. dhclient

[Phil Brutsche]

A long time ago, in a galaxy far, far way, someone said...

> I don't know if anyone else has had trouble with Cox changing your ip
> address several times a day lately, but I think I've found an answer for
> it. This is mostly referring to a Redhat 7.2 system.
>
> By default Redhat uses dhcpcd, which releases it's IP and requests a new
> one when the lease expires.  This may be just coincidemce, but it looks
> like Cox's dhcp server holds an IP for a while after it's been released
> and you get a new one, instead of your old one.  For some reason dhcpcd
> also gets the domain name screwed up too.  It should be "om.om.cox.net"
> (according to reverse DNS lookups), but dhcpcd gets "om.cox.net".  Oh
> well...
>
> I've tested with ISC's dhclient and it simply sends a renew request for
> your current address when the lease expires.  This seems to behave much
> better with Cox.

This behavior isn't limited to dhcpcd - several firewall devices (like the
Linksys "Cable modem/DSL router") do similar things in their DHCP clients.

-- 

Phil


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