I have a question regarding VPN and several tunnels configured on it. My firmware is Tomato Firmware v1.28.9054 beta MIPSR2 vpn3.6 K26 USB on the router Asus RT-N16.
On it has set up a VPN server on UDP TUN with enabled Allow Only These Clients and below I have listed the names of CommonName networks to which it wants to have a routing from server. All routing is working nicely with internal routing. I have access to clients from a server network and from clients networks to server network. However, the problem comes at a time when I want to add client a number four.
Configuration stores nicely in ccd folder - but the server no longer starts. When I try start it in the log I see
user.info kernel: device tun21 entered promiscuous mode
Simply if remove the fourth client everything works again.
I would be grateful for any tips. I want to have more an 3 VPN tunnels with full routing between all networks.