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From: Carl Fink on 30 Jun 2008 17:30
Most consumer grade ISPs (cable ISPs, aDSL) use DHCP, so you have no
guarantee you'll have the same IP address five minutes after you get it.
Some (my own provider, Optimum Online for one) rarely change the address,
but who wants to count on that always being the case?

Organizations like dyndns.org and no-ip.org have agents you can run on your
system, which report back to the central DNS server when your IP address
changes. For instance, you can set up yournamehere.no-ip.org for your
laptop, and whenever DHCP renews your address, the agent reports back to
no-ip.org, so yournamehere.no-ip.org still points to the laptop.

I prefer to host my own DNS on my own server, if only to keep my memory of
how to configure BIND relatively fresh. Does anyone know of a similar agent
that pairs with a daemon I can run on my DNS server, to track the IP address
of my own laptop and desktop boxes and point subdomain1.finknetwork.com and
subdomain2.finknetwork.com to them?

Thanks.
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Stupid mistakes you can correct!


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From: j t on 1 Jul 2008 09:20
On Mon, Jun 30, 2008 at 10:09 PM, Carl Fink <carlf(a)panix.com> wrote:
> I prefer to host my own DNS on my own server, if only to keep my memory of
> how to configure BIND relatively fresh. Does anyone know of a similar agent
> that pairs with a daemon I can run on my DNS server, to track the IP address
> of my own laptop and desktop boxes and point subdomain1.finknetwork.com and
> subdomain2.finknetwork.com to them?

If you're running your own BIND, are you aware of nsupdate and rfc
2136? I thought the only reason to want to use something "homebrewed"
was that most free dynamic dns providers don't offer updates via rfc
2136...

(I could be completely wrong here of course, so please excuse me if
I'm talking rot...)

Jaime :-)


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From: Carl Fink on 1 Jul 2008 11:30
On Tue, Jul 01, 2008 at 02:08:53PM +0100, j t wrote:
> On Mon, Jun 30, 2008 at 10:09 PM, Carl Fink <carlf(a)panix.com> wrote:
> > I prefer to host my own DNS on my own server, if only to keep my memory of
> > how to configure BIND relatively fresh. Does anyone know of a similar agent
> > that pairs with a daemon I can run on my DNS server, to track the IP address
> > of my own laptop and desktop boxes and point subdomain1.finknetwork.com and
> > subdomain2.finknetwork.com to them?
>
> If you're running your own BIND, are you aware of nsupdate and rfc
> 2136? I thought the only reason to want to use something "homebrewed"
> was that most free dynamic dns providers don't offer updates via rfc
> 2136...

No, I hadn't heard of it, and that seems to be just what I needed. Thank
you.
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Carl Fink nitpicking(a)nitpicking.com

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Stupid mistakes you can correct!


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From: Paul Johnson on 2 Jul 2008 01:00
On Mon, 2008-06-30 at 17:09 -0400, Carl Fink wrote:
> Most consumer grade ISPs (cable ISPs, aDSL) use DHCP, so you have no
> guarantee you'll have the same IP address five minutes after you get it.

Sure you do, DHCP doesn't change your IP unless you release it or you're
using an especially craptastic ISP. You might want to read up on how
DHCP works before saying something like that.

> I prefer to host my own DNS on my own server, if only to keep my memory of
> how to configure BIND relatively fresh. Does anyone know of a similar agent
> that pairs with a daemon I can run on my DNS server, to track the IP address
> of my own laptop and desktop boxes and point subdomain1.finknetwork.com and
> subdomain2.finknetwork.com to them?

dyndns.org does that, too.

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Paul Johnson
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From: Carl Fink on 2 Jul 2008 01:30
On Wed, Jul 02, 2008 at 04:57:19AM +0000, Paul Johnson wrote:
> On Mon, 2008-06-30 at 17:09 -0400, Carl Fink wrote:
> > Most consumer grade ISPs (cable ISPs, aDSL) use DHCP, so you have no
> > guarantee you'll have the same IP address five minutes after you get it.
>
> Sure you do, DHCP doesn't change your IP unless you release it or you're
> using an especially craptastic ISP. You might want to read up on how
> DHCP works before saying something like that.

OK, so actual experience is trumped by generic references to some sort of
unspecified documentation? Realize that real ISPs, notably a friend of
mine's, do in fact change his IP address at least once per day.

Mebbe they shouldn't. They do.

> > I prefer to host my own DNS on my own server, if only to keep my memory of
> > how to configure BIND relatively fresh. Does anyone know of a similar agent
> > that pairs with a daemon I can run on my DNS server, to track the IP address
> > of my own laptop and desktop boxes and point subdomain1.finknetwork.com and
> > subdomain2.finknetwork.com to them?
>
> dyndns.org does that, too.

I know. But as I wrote, I want to use my own server running BIND.
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Read my blog at blog.nitpicking.com. Reviews! Observations!
Stupid mistakes you can correct!


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