I was planning to use ER605 routers for VPN tunnel connection between branch offices and main office. The configuration would be to use the main fiber optic gigabit link for primary WAN and a 4G USB m

When I am using the ER605 it builds up an L2TP client VPN. Normally I have internet connection on the WAN but now I am at a customer which has not internet. I bought a WIFI dongle which is supported a