PostUp = iptables -t nat -A POSTROUTING -o wg0 -j MASQUERADE; iptables -t nat -A POSTROUTING -o tun0 -j MASQUERADE; iptables -A FORWARD -i wg0 -o tun0 -j ACCEPT; iptables -A FORWARD -i tun0 -o wg0 -j ACCEPT; iptables -t mangle -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
PostDown = iptables -t nat -D POSTROUTING -o wg0 -j MASQUERADE; iptables -t nat -D POSTROUTING -o tun0 -j MASQUERADE; iptables -D FORWARD -i wg0 -o tun0 -j ACCEPT; iptables -D FORWARD -i tun0 -o wg0 -j ACCEPT; iptables -t mangle -D FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu