Very Computer

Hi all,
Okay, recompiled the kernel, IP-forwarding is working now ;)
However, the system is bothering me with the next repeating message(s):

natd[285]: failed to write packet back (Permission denied)
natd[285]: failed to write packet back (Host is down)

I started "natd" with "-u -m" and also tried "-interface fxp0".

Output from "ifconfig fxp0;ifconfig ep0":

fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 129.125.xxx.xxx netmask 0xffff0000 broadcast
129.125.255.255
        ether 00:00:0e:xx:xx:xx
        media: autoselect (10baseT/UTP) status: active
        supported media: autoselect 100baseTX <full-duplex> 100baseTX
10baseT/UTP <full-duplex> 10baseT/UTP
ep0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.1.251 netmask 0xffffff00 broadcast 192.168.1.255
        ether 00:60:08:xx:xx:xx

NIC-fxp0 is an Intel EPro 10/100, and NIC-ep0 is a 3Com 509,by-the-way.
Any suggestions? TIA!
Regards,
--
   ___  ___       __         |  Henk C.A. Bokhoven, Groningen, NL
  /  / /  /____  (__)__  ___ | E-mail : hbokh at worldonline dot nl
 /  /_/  /  _  \/  /\  \/  / |    day : HP-UX, OSF1, Solaris, Linux
 \___,__/__//__/__/ /__/\__\ |  night : Linux SuSE 6.2 on an i686

Problem seems to be solved.
FYI: I added the "-d"-switch, restarted "natd" and cleared the arp-cache
("arp -d -a").
Cheers,
--
   ___  ___       __         |  Henk C.A. Bokhoven, Groningen, NL
  /  / /  /____  (__)__  ___ | E-mail : hbokh at worldonline dot nl
 /  /_/  /  _  \/  /\  \/  / |    day : HP-UX, OSF1, Solaris, Linux
 \___,__/__//__/__/ /__/\__\ |  night : Linux SuSE 6.2 on an i686