diff --git a/package/gluon-mesh-vpn-openvpn/luasrc/usr/lib/lua/gluon/mesh-vpn/provider/openvpn.lua b/package/gluon-mesh-vpn-openvpn/luasrc/usr/lib/lua/gluon/mesh-vpn/provider/openvpn.lua
index 935d2765..eefd7f4d 100755
--- a/package/gluon-mesh-vpn-openvpn/luasrc/usr/lib/lua/gluon/mesh-vpn/provider/openvpn.lua
+++ b/package/gluon-mesh-vpn-openvpn/luasrc/usr/lib/lua/gluon/mesh-vpn/provider/openvpn.lua
@@ -33,4 +33,8 @@ function M.set_limit(ingress_limit, egress_limit)
 	uci:save('simple-tc')
 end
 
+function M.mtu()
+	return site.mesh_vpn.openvpn.mtu()
+end
+
 return M