Port forwarding

[Aerya]

Hi,

I use gluetun client and it works well except for port forwarding.

I added an IPtables (v4 only) rule on my VPS but port is still reported as closed
iptables -t nat -A PREROUTING -d VPS_IP -p tcp --dport 52920 -j DNAT --to-dest 10.66.66.2:52920

Everything seems to be ok on the client side

root@NUC2:/home/aerya# docker exec wireguard iptables -nvL
Chain INPUT (policy DROP 1 packets, 40 bytes)
 pkts bytes target     prot opt in     out     source               destination         
25546 3254K ACCEPT     all  --  lo     *       0.0.0.0/0            0.0.0.0/0           
55782   24M ACCEPT     all  --  *      *       0.0.0.0/0            0.0.0.0/0            ctstate RELATED,ESTABLISHED
 6340  346K ACCEPT     all  --  eth0   *       0.0.0.0/0            172.17.0.0/16       
    0     0 ACCEPT     tcp  --  wg0    *       0.0.0.0/0            0.0.0.0/0            tcp dpt:52920
    0     0 ACCEPT     udp  --  wg0    *       0.0.0.0/0            0.0.0.0/0            udp dpt:52920

What am I missing?