[sclug] DHCP and DNS

Matt matt at bodgit-n-scarper.com
Mon Apr 25 09:04:16 UTC 2005

* Alex Butcher <lug at assursys.co.uk> [2005-04-25 09:48:42]:
> On Mon, 25 Apr 2005, Matt wrote:
> >* Will Dickson <wrd at glaurung.demon.co.uk> [2005-04-25 01:39:44]:
> >>
> >>The problem is that my LAN hosts provide various services to each other,
> >>so they need to be able to resolve each other's names. I assumed
> >>(without, I confess, having really thought it through) that the DHCP
> >>server would wave some kind of magic wand and make this work. However,
> >>it doesn't.
> [snip]
> >You need to investigate Dynamic DNS. You can configure ISC dhcpd to send
> >updates to a running BIND named so when a client gets a lease, their
> >hostname goes into the DNS zone, etc.
> IMNSHO, machines providing services should be assigned static IP addresses
> (which could well be done by DHCP, based on MAC address) and those static IP
> addresses linked with static A records in the DNS.

Yes, this is what I tend to do, DHCP is useful for propagating changes
across the entire network, gateway, DNS servers, NTP source, etc. saves
having to reconfigure each machine.

> Of course, for a home network, do what the hell you like. :-)

Alternatively, use something like
Zeroconf/Rendezvous/Bonjour/Whatever-its-called-this-week to let all the
machines automagically figure everything out for themselves.

"Accept anything. Then explain it your way."
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