A side (192.168.2.0/24): LEDE router 192.168.2.1 (static route to access remote side 192.168.1.0/24 pointing to 192.168.2.100) Pi Zero with Wireguard (192.168.2.100, WG: 192.168.5.2) Config: auto wg0 iface wg0 inet static pre-up ip link add dev wg0 type wireguard post-up wg setconf wg0 /etc/wireguard/wireguard.conf post-up ip link set dev wg0 up post-up ip route add 192.168.1.0/24 via 192.168.5.1 dev wg0 post-up iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE address 192.168.5.2 netmask 255.255.255.0 B side (192.168.1.0/24): Unifi router 192.168.1.1 (static route to access remote side 192.168.2.0/24 pointing to 192.168.1.54) Ubuntu server with Wireguard (192.168.1.54, WG: 192.168.5.1) Config: iface wg0 inet static pre-up /sbin/ip link add dev wg0 type wireguard post-up /usr/bin/wg setconf wg0 /etc/wireguard/wg0.conf post-up /sbin/ip route add 192.168.2.0/24 via 192.168.5.2 dev wg0 post-up iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE post-down /sbin/ip link del wg0 address 192.168.5.1 netmask 255.255.255.0 --- Everything is working great, except that on the "Pi Zero with Wireguard" I can't access/ping remote devices in the 192.168.1.0/24 range, only the remote server 192.168.1.54. From any other machine in the same "A side" I am able to access devices in the 192.168.1.0/24 range, just from the Pi Zero itself not. What I am missing here? pi@raspberrypizero:~ $ ping 192.168.1.54 PING 192.168.1.54 (192.168.1.54) 56(84) bytes of data. 64 bytes from 192.168.1.54: icmp_seq=1 ttl=64 time=48.6 ms 64 bytes from 192.168.1.54: icmp_seq=2 ttl=64 time=134 ms^C --- 192.168.1.54 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1002ms rtt min/avg/max/mdev = 48.671/91.554/134.437/42.883 ms pi@raspberrypizero:~ $ ping 192.168.1.100 PING 192.168.1.100 (192.168.1.100) 56(84) bytes of data. ^C --- 192.168.1.100 ping statistics --- 6 packets transmitted, 0 received, 100% packet loss, time 5188ms pi@raspberrypizero:~ $ traceroute 192.168.1.100 traceroute to 192.168.1.100 (192.168.1.100), 30 hops max, 60 byte packets 1 192.168.5.1 (192.168.5.1) 42.279 ms 43.834 ms 44.678 ms 2 * * * 3 * * * 4 * * * --- B side is working great, I am able to ping everything, even from the Ubuntu server. Regards, Adrian