[syslinux] PXE on multiple interfaces

[Jason Gerfen]

I am attempting to setup a PXE boot server listening on different 
subnets and have spent a couple of days scouring forums trying to find 
an anser. Below is a brief synopsis of the topology.

Client -> Subnet-29 -> Server-1
Client -> Subnet-151 -> Server-1

Here is the current DHCPD.CONF
### GLOBAL DHCP CONFIGURATION ###

option domain-name="tyr";
default-lease-time 900;
max-lease-time 1800;
ddns-update-style none;
authoritative;
allow bootp;
allow booting;
option space PXE;
option PXE.mtftp-ip code 1 = ip-address;
option PXE.mtftp-cport code 2 = unsigned integer 16;
option PXE.mtftp-sport code 3 = unsigned integer 16;
option PXE.mtftp-tmout code 4 = unsigned integer 8;
option PXE.mtftp-tmout code 4 = unsigned integer 8;

### SUBNETS CONFIGURATION ###

# Vlan-029
subnet 192.168.1.0
netmask 255.255.255.0 {
option domain-name-servers 192.168.1.10, 192.168.1.11;
option routers 192.168.1.1;
}

# Vlan-151
subnet 192.168.0.0
netmask 255.255.255.0 {
option domain-name-servers 192.168.0.10, 192.168.0.11;
option routers 192.168.0.1;
}

### PXE GROUPS CONFIGURATION ###

# MMC-PXE group
group {
next-server 192.168.1.254;
filename "/tftproot/pxelinux.0";
host MMPC-57 {
hardware ethernet 00:02:B3:A3:06:7c;
fixed-address 192.168.1.101;
}
host MMPC-110 {
hardware ethernet 00:02:B3:EB:08:43;
fixed-address 192.168.1.102;
}
}
# UN-PXE group
group {
next-server 192.168.0.254;
filename "/tftproot/pxelinux.0";
host unsc-01 {
hardware ethernet 00:02:B3:63:c6:b5;
fixed-address 192.168.0.101;
}
host unpc-92 {
hardware ethernet 00:02:B3:D2:06:1B;
fixed-address 192.168.0.102;
}
}

When I sniff the packets on the client and server this is the output I 
am recieving:
13:26:05.381080 mmpc-98.32823 > tyr.tftp: 22 RRQ "pxelinux.0" (DF)
13:26:05.381105 tyr > mmpc-98: icmp: tyr udp port tftp unreachable [tos 
0xc0]

And the output of the current listening services on the server:
jason at tyr:~$ netstat -an | grep udp
udp 0 0 0.0.0.0:67 0.0.0.0:*
udp 0 0 0.0.0.0:67 0.0.0.0:*
udp 0 0 0.0.0.0:69 0.0.0.0:*

And the current ifconfig output:
eth2.29 Link encap:Ethernet HWaddr 00:02:B3:BC:46:88
inet addr:192.168.0.254 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:65644 errors:0 dropped:0 overruns:0 frame:0
TX packets:167395 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:7195714 (6.8 Mb) TX bytes:17110387 (16.3 Mb)

eth2.151 Link encap:Ethernet HWaddr 00:02:B3:BC:46:88
inet addr:192.168.1.254 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:72591 errors:0 dropped:0 overruns:0 frame:0
TX packets:138170 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:6934628 (6.6 Mb) TX bytes:14440655 (13.7 Mb)


Am I missing something? Any help, pointers, tips, tutorials etc. are 
appreciated.

-- 
Jas

“I was a bit nervous about talking
 to you–which probably explains all
 those honking  noises I made
 whilst pretending to squeeze
 invisible lemons.”
~ Jake O.