This article saved me some time and trouble. Apparently the Intel Pro/1000 adaptors in Virtual Box strip 802.1Q VLAN tags – I discovered this after examining packets sent to the vboxnet host-only network. The solution is to use the PC-Net adaptors.
This is for the DG834Gv3.
- Enable telnet -web interface – http://192.168.0.1/setup.cgi?todo=debug
- Enable SNMP – web interface – http://192.168.0.1/snmp.htm
Now you can telnet into the router. Check for the firewall rule that drops connections to UDP port 161. Continue reading