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All I can say is WOW!

I just did a firmware upgrade on my Linksys WRT54GS v4 to the latest stable DD-WRT bin, and I must say their are two massive benefits to upgrading your firmware if you haven’t already.

Part 1. Static Internal DNS / DHCP Leases

We can now organize all of our clients nodes the way WE want whilst still using DHCP to handle leases!  Simply paste your MAC, think up a clever hostname, and pop in a static IP and you are ready to rock with Static DNS.  Run dhclient and watch your machine grab the IP you set and the hostname you want.

Part 2. DNSMasq - Additional DNS Options

Ever want to attempt a PXE Boot or NFS Root installation of your favourite Linux distro - but you don’t want to go through the hassle or creating a private network with DHCPD and the whole IPTables nightmare? Don’t forget having to buy a switch - because not many people have these laying around any more (I only have 4).

You are in luck!  DD-WRT allows you to specify additional DNSMasq parameters to specify your tftpd server and the name of your pxe file, just add ” dhcp-boot=pxelinux.0,,<IP of TFTP Server> “into your :Additional DNS Options” under Administration -> Services.

It could not get much simpler than that - now go play!