I have two p2p tunnels to two different servers on a host, tun1 and tun2: (host is Ubuntu server 18.04)
(Server 1: IP1) <--> (Host: IP0) <--> (Server 2: IP2)
For tun1 to server 1 I have:
proto udp mode p2p remote IP1 rport 4856 local IP0 lport 4856 dev-type tun tun-ipv6 resolv-retry infinite dev tun1 comp-lzo persist-key persist-tun cipher aes-256-cbc ifconfig 192.168.76.2 192.168.76.3 secret /etc/openvpn/key.key
for tun2 to server 2 I have:
proto udp mode p2p remote IP2 rport 4857 local IP0 lport 4857 dev-type tun tun-ipv6 resolv-retry infinite dev tun2 comp-lzo persist-key persist-tun cipher aes-256-cbc ifconfig 192.168.77.2 192.168.77.3 secret /etc/openvpn/key.key
I want to forward packets received on tun1 with dst=IP4 to tun2 so I added a static route:
ip route add IP4/32 via 192.168.77.3
Ip forwarding is also enabled.
sysctl -w net.ipv4.ip_forward=1
No Iptables rules existed. All chains have ACCEPT behavior.
All tunnel interfaces are connected to their corresponding servers and up.
When I send packets from Server 1 with dst=IP4 to the tunnel, packets are received in host but they are not forwarded to tun2 and I cannot see them in Server 2 using