I am trying to run a dhcp server over Bluetooth. Currently, I have a bluetooth adapter hooked up to a linux box with a hard coded IP of 192.168.3.1. The dhcpd.conf has:

subnet 192.168.3.0 netmask 255.255.255.0 {}

I have the exact same setup for WIFI on 192.168.2.1 and I can connect and get an IP from a Windows machine with WIFI enabled.

I have another Bluetooth adapter on another Windows machine, and have the TCP/IP options set for use DHCP...but I can never get an IP.

If I hard code the windows IP to 192.168.3.2, I can connect over the Bluetooth adapters (ping, http, ftp, etc).

Any ideas how I can get this up and running with DHCP?

Do the logs show any dhcpd related messages?
Can you run a sniffer on the bluetooth interface?

The logs say that it is listeneing to requests on the WIFI, but nothing is there related to the Bluetooth.

/var/log/messages
May 12 08:46:57 SMED dhcpd: Internet Software Consortium DHCP Server V3.0.1rc13
May 12 08:46:57 SMED dhcpd: Copyright 1995-2003 Internet Software Consortium.
May 12 08:46:57 SMED dhcpd: All rights reserved.
May 12 08:46:57 SMED dhcpd: For info, please visit http://www.isc.org/products/DHCP
May 12 08:46:57 SMED dhcpd: Internet Software Consortium DHCP Server V3.0.1rc13
May 12 08:46:57 SMED dhcpd: Copyright 1995-2003 Internet Software Consortium.
May 12 08:46:57 SMED dhcpd: All rights reserved.
May 12 08:46:57 SMED dhcpd: For info, please visit http://www.isc.org/products/DHCP
May 12 08:46:57 SMED dhcpd: Internet Software Consortium DHCP Server V3.0.1rc13
May 12 08:46:57 SMED dhcpd: Copyright 1995-2003 Internet Software Consortium.
May 12 08:46:57 SMED dhcpd: All rights reserved.
May 12 08:46:57 SMED dhcpd: For info, please visit http://www.isc.org/products/DHCP
May 12 08:46:57 SMED dhcpd: Wrote 0 leases to leases file.
May 12 08:46:57 SMED dhcpd: Wrote 0 leases to leases file.
May 12 08:46:57 SMED dhcpd: Listening on LPF/wlan0/00:09:5b:40:bc:65/192.168.2.0/24
May 12 08:46:57 SMED dhcpd: Sending on LPF/wlan0/00:09:5b:40:bc:65/192.168.2.0/24
May 12 08:46:57 SMED dhcpd: Sending on Socket/fallback/fallback-net
May 12 08:46:57 SMED dhcpd:
May 12 08:46:57 SMED dhcpd: Listening on LPF/wlan0/00:09:5b:40:bc:65/192.168.2.0/24
May 12 08:46:57 SMED dhcpd: Sending on LPF/wlan0/00:09:5b:40:bc:65/192.168.2.0/24
May 12 08:46:57 SMED dhcpd: Sending on Socket/fallback/fallback-net
May 12 08:46:57 SMED dhcpd: dhcpd startup succeeded

ifconfig
bnep0 Link encap:Ethernet HWaddr 00:0F:3D:0B:FB3
inet addr:192.168.3.1 Bcast:192.168.3.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:118 errors:0 dropped:0 overruns:0 frame:0
TX packets:54 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:21285 (20.7 Kb) TX bytes:7974 (7.7 Kb)

eth0 Link encap:Ethernet HWaddr 00:50:BF:38:81:61
inet addr:172.19.3.137 Bcast:172.19.3.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3379 errors:0 dropped:0 overruns:0 frame:0
TX packets:295 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:355690 (347.3 Kb) TX bytes:28896 (28.2 Kb)
Interrupt:11 Base address:0x4000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:21443 errors:0 dropped:0 overruns:0 frame:0
TX packets:21443 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1463768 (1.3 Mb) TX bytes:1463768 (1.3 Mb)

wlan0 Link encap:Ethernet HWaddr 00:09:5B:40:BC:65
inet addr:192.168.2.1 Bcast:192.168.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:55 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 b) TX bytes:11269 (11.0 Kb)
Interrupt:11 Memory:c8892000-c8893000

/etc/dhcpd/dhcpd.conf
# dhcpd.conf
#
# Sample configuration file for ISC dhcpd
#

# option definitions common to all supported networks...
option domain-name "SMED";
#option domain-name-servers ns1.example.org, ns2.example.org;
ddns-update-style none;
default-lease-time 600;
max-lease-time 7200;

# If this DHCP server is the official DHCP server for the local
# network, the authoritative directive should be uncommented.
#authoritative;

# Use this to send dhcp log messages to a different log file (you also
# have to hack syslog.conf to complete the redirection).
log-facility local7;

# No service will be given on this subnet, but declaring it helps the
# DHCP server to understand the network topology.

subnet 192.168.0.0 netmask 255.255.255.0 {
}

#subnet 192.168.1.0 netmask 255.255.255.0 {
#}

# This is a very basic subnet declaration.

subnet 192.168.2.0 netmask 255.255.255.0 {

}

subnet 192.168.3.0 netmask 255.255.255.0 {

}

OK, I figured part of it out. I didn't have bnep0 in /etc/init.d/dhcpd. Now I get this message:

May 12 09:46:50 SMED dhcpd: DHCPDISCOVER from 00:0f:3d:0b:fe:43 via bnep0: network 192.168.3.0/24: no free leases

I got it!
I never specified a range, which is why i was getting the lease error.