diff --git a/net/strongswan/Makefile b/net/strongswan/Makefile
index d80e2b1b7..3cb1c94a6 100644
--- a/net/strongswan/Makefile
+++ b/net/strongswan/Makefile
@@ -732,7 +732,7 @@ $(eval $(call BuildPlugin,stroke,Stroke,+strongswan-charon +strongswan-ipsec))
 $(eval $(call BuildPlugin,test-vectors,crypto test vectors,))
 $(eval $(call BuildPlugin,uci,UCI config interface,+PACKAGE_strongswan-mod-uci:libuci))
 $(eval $(call BuildPlugin,unity,Cisco Unity extension,))
-$(eval $(call BuildPlugin,updown,updown firewall,+iptables-legacy +iptables-mod-ipsec +kmod-ipt-ipsec))
+$(eval $(call BuildPlugin,updown,updown firewall,+iptables +IPV6:ip6tables +iptables-mod-ipsec +kmod-ipt-ipsec))
 $(eval $(call BuildPlugin,vici,Versatile IKE Configuration Interface,))
 $(eval $(call BuildPlugin,whitelist,peer identity whitelisting,))
 $(eval $(call BuildPlugin,x509,x509 certificate,))