Unknown network segment, simple class, custom client

[Glenn Satchell]

Hi Michael,

Ok, the error is "10.106.250.2 unknown network segment".

In your dhcpd.conf you have definitions for subnets 10.102.101.0 and
10.104.67.0. I think you need to add a definition for 10.106.250.0
subnet along with appropriate pool, range, etc.

regards,
-glenn

>Date: Tue, 2 Jun 2009 10:23:24 +0800
>Subject: Unknown network segment, simple class, custom client
>From: michael kapelko <kornerr at gmail.com>
>To: dhcp-users at isc.org
>X-BeenThere: dhcp-users at lists.isc.org
>
>Hello.
>
>I try to simulate sending of DHCP packet from a certain relay (without
>adding Relay agent option) using the following perl script:
>
>#!/usr/bin/env perl
>use strict;
>use warnings;
>use Net::DHCP::Packet;
>use Net::DHCP::Constants;
>use Net::RawIP;
>
>my $sock = new Net::RawIP({udp => {}});
>my $p = new Net::DHCP::Packet(
>    Chaddr  => '000BCDEF',
>    Xid     => int(rand(0xFFFFFFFF)),
>    Ciaddr  => '0.0.0.0',
>    Yiaddr  => '0.0.0.0',
>    Siaddr  => '0.0.0.0',
>    Giaddr  => '10.106.250.2',
>    Hops    => 1,
>    Flags   => 0x8000,
>    DHO_DHCP_MESSAGE_TYPE() => DHCPDISCOVER());
>$sock->set({
>        ip => {
>            saddr   => "10.106.250.2",
>            daddr   => "10.102.101.13",
>            tos     => 22
>        },
>        udp => {
>            source  => 68,
>            dest    => 67,
>            data    => $p->serialize()
>        }
>    });
>$sock->send();
>
>But in response for that dhcpd syslogs:
>
>Jun  2 10:12:51 zond2 dhcpd: DHCPDISCOVER from 00:0b:cd:ef:00:00 via
>10.106.250.2: unknown network segment
>
>My /etc/dhcpd.conf is
>
>failover peer "elt-dhcp" {
>         primary;
>         address 10.102.101.13;
>         port 519;
>         peer address 10.102.101.23;
>         peer port 520;
>         max-response-delay 180;
>         max-unacked-updates 10;
>         mclt 180;
>#         mclt 3600;
>#         split 128;
>         split 255;
>#         load balance max seconds 3;
>}
>include "/etc/dhcpd.master";
>
>and my /etc/dhcpd.master is
>
>ddns-update-style none;
>default-lease-time 500;
>max-lease-time 600;
>local-address 10.102.101.13;
>authoritative;
>class "10.106.250.2:10" {
>#   match if (suffix(option agent.circuit-id, 1) = A) and
>    match if (packet(24, 4) = 0A:6A:FA:02);
>}
>
>shared-network "clients" {
>subnet 10.102.101.0 netmask 255.255.255.0 { }
>subnet 10.104.67.0 netmask 255.255.255.0 {
>    option routers 10.104.67.1;
>    option subnet-mask 255.255.255.0;
>    option domain-name-servers 91.196.207.62, 91.196.206.2;
>  pool {
>        failover peer "elt-dhcp";
>        deny dynamic bootp clients;
>        allow members of "10.106.250.2:10";
>        range 10.104.67.205;
>      }
>  }
>}
>
>
>Please tell me what I am doing wrong. Thanks.
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