@Hank21 Hi, I just checked again after your message, and for a reason I actually don' t understand, the same setup I described in my first message and that wasn't working, now it works flawlessly. So...

@Hank21 hi and thank you for your answer. What do you mean with "the next hop is the local IP of the VPN server or 0.0.0.0"? I set in the static routes, the next hop as the main office gateway's IP...

Hi all, I have a background in network administration and systems management, so I have a decent idea of how this should work, nevertheless I am miserably failing to set up our WAN the way it is...