I want to make a IPSec VPN from several MR6400 routers to a R600VPN server. It works if I set R600VPN as initiator, but I need that MR6400 act as initiator because the ip given by the mobile operator is behind a NAT, so isn't public. Is there any way to set the MR6400 as IPSec initiator? I know that from V5 hardaware version, TP Link have eliminated IPSec VPN option. Other brands have a functional VPN togheter with the 4G router. What is the option with TP Link, using two routers 4G and VPN for each location?