Hi, all, I've a little problem.
I configured my 871 to take IP address from the WAN interface, a D-link modem.
The modem send via DHCP the information that the router needs to operate.
...all still works, but, I've this error in the log:
Looping packet detected and dropped -src=my public IP dst=192.168.10.1(the d-link modem) hl=20 tl=604 prot=17 sport=68 dport=67inFastEthernet4, nexthop=mypublicIP
This error every 2 minuts! After a day the router needs to reset because I can't surfing the web and I can't reach him via telnet or web browser.
The problem can be the DHCP? (port 67 and 68 mumble)....