Dhcrelay problem - tun0: not found

Oroboros

I've assigned my OpenVPN tun0 interface as Opt2 and setup firewall rules on it. I even have openospfd running over tun0 now (which required hand-editing config, but that is another story).

But, dhcrelay refuses to start and listen on tun0 - requests go out over it just fine but replies are ignored.

If I start it by hand I get the cryptic 'tun0: not found' which is also what gets logged in the system logs when started automatically:

/usr/local/sbin/dhcrelay -i tun0 -i rl2 172.16.4.1

Internet Systems Consortium DHCP Relay Agent V3.0.7
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/
Listening on BPF/rl2/00:40:48:b2:97:1f
Sending on BPF/rl2/00:40:48:b2:97:1f
tun0: not found

The tun0 is there, and is functional:

ifconfig tun0

tun0: flags=8051 <up,pointopoint,running,multicast>metric 0 mtu 1500
inet6 fe80::240:48ff:feb2:9721%tun0 prefixlen 64 scopeid 0x8
inet 10.40.41.2 –> 10.40.41.1 netmask 0xffffffff
Opened by PID 406

ping 10.40.41.1

PING 10.40.41.1 (10.40.41.1): 56 data bytes
64 bytes from 10.40.41.1: icmp_seq=0 ttl=64 time=68.303 ms
64 bytes from 10.40.41.1: icmp_seq=1 ttl=64 time=68.945 ms
^C
--- 10.40.41.1 ping statistics ---
2 packets transmitted, 2 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 68.303/68.624/68.945/0.321 ms

I do have 4 total bpf devices on the system (1.2.3-RELEASE on the regular pfsense platform):

ls -l /var/dhcpd/dev/bpf*

crw–----- 1 dhcpd _dhcp 0, 96 Feb 6 14:18 /var/dhcpd/dev/bpf0
crw------- 1 dhcpd _dhcp 0, 104 Feb 6 14:18 /var/dhcpd/dev/bpf1
crw------- 1 dhcpd _dhcp 0, 105 Feb 6 14:18 /var/dhcpd/dev/bpf2
crw------- 1 dhcpd _dhcp 0, 106 Feb 8 15:52 /var/dhcpd/dev/bpf3

ls -l /dev/bpf*

crw------- 1 root wheel 0, 96 Feb 6 14:18 /dev/bpf0
crw------- 1 root wheel 0, 104 Feb 6 14:18 /dev/bpf1
crw------- 1 root wheel 0, 105 Feb 6 14:18 /dev/bpf2
crw------- 1 root wheel 0, 106 Feb 8 15:52 /dev/bpf3

I'm guessing that bpf3 is the one that corresponds to tun0, given the difference in dates?

date

Mon Feb 8 16:25:03 MST 2010

But my OpenVPN tunnel has been up for two days? I'm certain of that fact, so that date on bpf3 makes no sense in relation to anything on the system.</up,pointopoint,running,multicast>