@selfhosted strange problem. I have a raspberrypi as vpn gateway. I have a reolink cctv. It emails me when motion. If i use openvpn, it works fine. If i use wireguard, it does not work. If i connect to the vpn gateway on my laptop, openvpn and wg forward the laptop traffic fine. The openvpn and wg is connects to the same commerical vpn service.
Are you using FQDNs (Full Qualified Domain Names)? WireGuard doesn’t resolve FQDNs.
@AtariDump did a tcpdump, and dns is working, have self hosted pihole. It is really strange.