[CentOS] GRE Tunnels

Hey all,

Anybody been successful running DHCPD on a GRE tunnel? When I tell DHCPD to listen on cisco1 I see this in the log

Jul 23 16:21:03 atlantis dhcpd: cisco1: unknown hardware address type 778

Here is the output of ifconfig

cisco1 Link encap:UNSPEC HWaddr 8B-8E-28-32-00-00-00-00-00-00-00-00-00-00-00-00

inet addr:10.199.0.2 P-t-P:10.199.0.2 Mask:255.255.255.0

UP POINTOPOINT RUNNING NOARP MTU:1476 Metric:1

RX packets:11 errors:0 dropped:0 overruns:0 frame:0

TX packets:3 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:2876 (2.8 KiB) TX bytes:324 (324.0 b)

Thanks,

Craig