Routing through a non-adjacent host in a virtual network

I have a WireGuard virtual network. Three hosts on the network: A, B and R. Only the host R has a static public IP, so both hosts A and B connect to the host R to connect to the virtual network. Hosts A and R are directly connected, but hosts A and B are not — the packets have to be routed through the host R. ### Problem I want to route packets from host A through the host B, without configuring the routing table of the host R. Example: To send a packet from host A to public host with IP 1.1.1.1: Host A -> Host R -> Host B -> (through B's public interface) -> 1.1.1.1 One possible solution is to create another WireGuard network between the hosts A and B, inside the original virtual network, and then route the same way I would route from host A through R, but that looks redundant. Are there other solutions? Thank you. ### What I have tried Assume VPN subnet: 10.78.1.0/24 Host R: 10.78.1.1 Host A: 10.78.1.2 Host B: 10.78.1.3 VPN interface on host A: wg I tried adding a route on host A (also addings AllowedIPs in wireguard config):

ip route add 1.1.1.1 via 10.78.1.3 dev wg

But the packets never reach host B: the packets are routed according to the routing table of host R, and that is to route immediately through the host R's public interface. I presume that is because host R does not receive any information about the preferred next route. Is there any way to give host R such information?