setting the IP family enables mixed tunnels

src/pluto/kernel_netlink.c

@@ -523,9 +523,9 @@ static bool netlink_raw_eroute(const ip_address *this_host
 			tmpl[i].optional =
 				proto_info[i].proto == IPPROTO_COMP && dir != XFRM_POLICY_OUT;
 			tmpl[i].aalgos = tmpl[i].ealgos = tmpl[i].calgos = ~0;
+			tmpl[i].family = that_host->u.v4.sin_family;
 			tmpl[i].mode =
 				proto_info[i].encapsulation == ENCAPSULATION_MODE_TUNNEL;
-
 			if (!tmpl[i].mode)
 			{
 				continue;