i have problem with my ISP, when connecting with my DSL modem i got DNS server wich is dead, so i call the ISP where they said you should enter the DNS IPs in your PC (different than the one i got automatically by the modem). for the pc it was ok but for my setup box (no way to enter a DNS IPs it just getting that from the modem where it is connected to). i search the manual for command lines, then i use the following command :
dns server route add dns=184.108.40.206 metric=1 intf=Internet
dns server route add dns=220.127.116.11 metric=1 intf=Internet.
the result was ok.
DNS Server Source Domain Metric Intf State
18.104.22.168 1 Internet UP
22.214.171.124 1 Internet UP
126.96.36.199 * 10 Internet UP
188.8.131.52* 10 Internet UP
the problem now! when i reboot my modem i have to enter the above command or otherwise the modem will assign me the dead DNS servers.
how to keep the above configuration in the modem, so rebooting or power off will not delete the entries??