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I just tried to run dhcpd with two interfaces and it didnt quite work
right.
(V2.0b1pl18), Solaris 2.5.1, gcc.
It found both interfaces fine. It served IP addresses on my main LAN
fine. However a 'remote' LAN (actually a VLAN), it messed up.
The dhcp config LAN config is -
#
# Main departmental network. VLAN136
#
subnet 129.78.136.0 netmask 255.255.255.0 {
option routers 129.78.136.254;
option subnet-mask 255.255.255.0;
option domain-name "law.usyd.edu.au";
option domain-name-servers 129.78.136.1, 129.78.136.2, 129.78.64.2;
option time-servers 129.78.136.1, 129.78.64.4;
option log-servers 129.78.136.1;
# option ntp-servers janus.law.usyd.edu.au;
boot-unknown-clients off;
# dynamic-bootp-lease-length 3600;
# A small dynamic pool
range 129.78.136.160 129.78.136.176;
#
# Intranet group - VLAN137, student lab
#
subnet 172.16.137.0 netmask 255.255.255.0 {
option routers 172.16.137.254;
option subnet-mask 255.255.255.0;
option domain-name "law.usyd.edu.au";
option domain-name-servers 129.78.136.1, 129.78.136.2, 129.78.64.2;
option log-servers 129.78.136.1;
next-server keller;
filename "/usr/export/diskless";
range 172.16.137.17 172.16.137.89;
range dynamic-bootp 172.16.137.17 172.16.137.89;
}
#
# Old Teachers Collage. VLAN136 (Currently split from main VLAN)
#
subnet 129.78.217.64 netmask 255.255.255.224 {
option routers 129.78.217.94;
option domain-name-servers 129.78.64.2, 129.78.136.1;
option log-servers 129.78.136.1;
option netbios-name-servers janus;
option netbios-dd-server janus;
boot-unknown-clients off;
}
# Law Library
subnet 129.78.185.0 netmask 255.255.255.0 {
option routers 129.78.185.254;
range 129.78.185.200 129.78.185.249;
}
Most of the main '136' VLAN is static assignments. Most of VLAN 137 is
dynamic. The remote LAN and the 137 VLAN are 'ip-helper'ed to 129.78.136.1
(the main server).
The library is a seperate VLAN. (Seperate administrative domain).
I had a need to assign addresses for the library (helping with a project)
so I activated the unused le0 interface on my Ultra-1 and connected it
to their VLAN.
DHCPD started up fine, found both interfaces and started serving addresses
in the hme0 connected LAN fine.
However forwarded requests from the 137 VLAN which should be comming in
via hme0 were being reported as comming in via le0, dhcpd then suitably
NAKed their renew request ( and presumably sent the reply out le0...)
This resulted in the hosts in VLAN 137 getting rather distressed.
Currently their are no dhcp clients in VLAN 185, so I dont know if
they would have worked properly - but the relayed requests were definatly
messed up!.
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