Double NAT Error Message

Hi,

Suddenly I got double NAT Error Message.

My modem Netgear DM111P connected to TimeCapsule.

I changed the router mode DHCP and NAT, Off (Bridge Mode), DHCP Only, none of them are working.

Off (Bridge Mode) disappearing NAT Error Message, however causing no internet connection.

Resetting my TC and modem are useless solutions as well.

Thanks,

Sandy