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Wireguard VPN Clients Unable to Access Internet via WireGuard (IPv6, ULA Pool)

Open siva-542 opened this issue 5 months ago • 0 comments

I am running WireGuard on an OpenWrt-based router and facing an issue with IPv6 connectivity for VPN clients.

Setup: The router is configured with WireGuard using IPv6. The VPN address pool assigned to clients is a ULA prefix. LAN clients and VPN clients can communicate with each other successfully (bidirectional reachability).

Issue: VPN clients cannot access the internet over IPv6. For example, ping6 google.com from a VPN client fails. The packets appear to get dropped at the wg0 interface on the VPN server.

Could you please advise whether this is a limitation of using ULA addresses as the WireGuard client pool, or if there is an additional configuration required to enable IPv6 internet access for VPN clients?

siva-542 avatar Sep 17 '25 19:09 siva-542