diff --git a/gtests/net/packetdrill/netdev.c b/gtests/net/packetdrill/netdev.c
index 52f1a8b9ae4f59f785db33eacc0c0a456789a254..d4ac7c8068b639a4cb311a97e82154823229eba7 100644
--- a/gtests/net/packetdrill/netdev.c
+++ b/gtests/net/packetdrill/netdev.c
@@ -267,11 +267,7 @@ static void route_traffic_to_device(struct config *config,
 	} else if (config->wire_protocol == AF_INET6) {
 		asprintf(&route_command,
 			 "route delete -inet6 %s > /dev/null 2>&1 ; "
-#if defined(__FreeBSD__)
-			 "route add -inet6 %s -interface tun0 %s > /dev/null",
-#elif defined(__OpenBSD__) || defined(__NetBSD__)
 			 "route add -inet6 %s %s > /dev/null",
-#endif
 			 config->live_remote_prefix_string,
 			 config->live_remote_prefix_string,
 			 config->live_gateway_ip_string);