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DHCP subnet problem

Subject: DHCP subnet problem
From: gartmann@xxxxxxxxxxxxxxxxxxxxxxxx (Christoph Gartmann)
Date: Thu, 24 Jul 2008 15:28:50 +0000 (UTC)
Newsgroups: vmsnet.networks.tcp-ip.multinet

Hello,

Multinet V5.2 with all patches under OpenVMS 7.3-2. We have a subnet
statmenet of:

   subnet 192.168.1.0 netmask 255.255.248.0 {
      option ntp-servers 192.168.1.254;
      option routers 192.168.1.254;
      option subnet-mask 255.255.248.0;
   }

Followed by fixed host declarations, eg.:

   host Prt32 {
     hardware ethernet 00:0e:7f:d8:e7:42;
     fixed-address 192.168.1.38;
     option host-name "PRT32";
   }

This doesn't work. The DHCP server claims that there are no leases available
for the given ethernet address of Prt32. As soon as we change the header line
of the subnet declaration to
   subnet 192.168.1.0 netmask 255.255.255.0 {
all is fine. But the subnet mask is indeed 255.255.248.0. So what will happen
if we try to distribute addresses like 192.168.2.17? They are within the
real range of the subnet (.248.0) but not within (.255.0). This looks to me
like an error in Multinet's DHCP-server. Any comments?

Regards,
   Christoph Gartmann

-- 
 Max-Planck-Institut fuer      Phone   : +49-761-5108-464   Fax: -80464
 Immunbiologie
 Postfach 1169                 Internet: gartmann@immunbio dot mpg dot de
 D-79011  Freiburg, Germany
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