[ale] Strange ISC DHCP behavior...?

[Jim Kinney]

It is possible that th3e printer network software doesn't support host
supplied name with dhcp. I've seen a few devices where dhcp required being
told on the client end "yes, use the name I put on the line here".

How are the machines getting a name at all? I'm asuming they get it from
their internal settings.

2008/11/16 Michael B. Trausch <mike at trausch.us>

> Am a bit surprised to not see anything as to _why_ this would happen,
> but perhaps someone has seen this before.
>
> I've a network where everything uses DHCP.  The server is Ubuntu
> Intrepid, using ISC BIND9 and DHCP3 software.  They're set up to talk
> to each other and do the whole DDNS thing so that when a machine gets
> an address, the machine's hostname is put in the DNS server.
>
> But, this isn't happening for my _printer_.  It does so with everything
> else.  Here's a snippet of the leases file:
>
> lease 10.0.0.6 {
>  starts 1 2008/11/17 00:47:07;
>  ends 2 2008/11/18 00:47:07;
>  cltt 1 2008/11/17 00:47:07;
>  binding state active;
>  next binding state free;
>  hardware ethernet 00:19:66:60:7b:2e;
>  set ddns-txt = "000a7c8ceb65f779bf14de88dc5c7257af";
>  set ddns-fwd-name = "zest.spicerack.trausch.us.";
>  client-hostname "zest";
> }
> lease 10.0.0.4 {
>  starts 1 2008/11/17 00:49:15;
>  ends 2 2008/11/18 12:49:15;
>  cltt 1 2008/11/17 00:49:15;
>  binding state active;
>  next binding state free;
>  hardware ethernet 00:04:00:21:45:89;
>  uid "\001\000\004\000!E\211";
>  client-hostname "e250dn";
> }
> lease 10.0.0.2 {
>  starts 1 2008/11/17 00:49:58;
>  ends 2 2008/11/18 00:49:58;
>  cltt 1 2008/11/17 00:49:58;
>  binding state active;
>  next binding state free;
>  hardware ethernet 00:16:44:e9:0d:60;
>  uid "\001\000\026D\351\015`";
>  set ddns-txt = "31d4142b1c8f62d024ec624e80437a9990";
>  set ddns-fwd-name = "rosemary.spicerack.trausch.us.";
>  client-hostname "rosemary";
> }
>
> "e250dn" is, of course, the printer.  Rosemary is a WiFi-connected
> laptop running VIsta (not mine!) and zest is my wire-connected desktop
> running Ubuntu.  The printer is a Lexmark E250dn, with seemingly
> typical Lexmark print/network controller firmware.  I can't find any
> reason that the printer would not show up; its DHCP parameters
> (hostname, etc) are set, and the DHCP server *sees* them... it just
> doesn't add the name to BIND, I don't use DHCP reservations or any of
> that stuff.
>
> None of the machines have any special stanzas created for them, either,
> in the DHCP configuration file; it's all network-global configuration.
> So it should, I'd think, put everything in BIND.
>
> Anyway, has anyone seen this and maybe know of something obscure that
> would be causing it?
>
>        --- Mike
>
> --
> My sigfile ran away and is on hiatus.
> http://www.trausch.us/
>
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>
>


-- 
-- 
James P. Kinney III
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