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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> I
have dhcpd working with ddns to my bind9 server. However, I want usable
hostnames and some system don’t send a hostname. I want is to use
the clients hostname if one exist (from the client) or make one up if none
exists. I just can’t figure out how to do this.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> I
can make one up using this:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>ddns-hostname = concat("dhcp-",
binary-to-ascii(10, 8, "-", leased-address));<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> But
as I said, if the client supplies a hostname I want to use that.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> I
know the client’s hostname is in the DHCP DHCPDISCOVER message, here is
an example where the hostname is H36372437:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>May 15 19:18:16 linux dhcpd: DHCPDISCOVER from
00:12:f0:ec:e7:c4 via eth0<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>May 15 19:18:17 linux dhcpd: DHCPOFFER on 192.168.0.203 to
00:12:f0:ec:e7:c4 (H36372437) via eth0<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>May 15 19:18:17 linux dhcpd: Added new forward map from
dhcp-192-168-0-203.watkins-home.com to 192.168.0.203<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>May 15 19:18:17 linux dhcpd: added reverse map from
203.0.168.192.in-addr.arpa. to dhcp-192-168-0-203.watkins-home.com<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>May 15 19:18:17 linux dhcpd: DHCPREQUEST for 192.168.0.203
(192.168.0.2) from 00:12:f0:ec:e7:c4 (H36372437) via eth0<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>May 15 19:18:17 linux dhcpd: DHCPACK on 192.168.0.203 to
00:12:f0:ec:e7:c4 (H36372437) via eth0<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks for any help.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Guy<o:p></o:p></span></font></p>
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