Merge pull request #1749 from marcin1j/patchwork/strongswan

strongswan: make kmod-ipsec6 dependency conditional

net/strongswan/Makefile

@@ -115,7 +115,7 @@ define Package/strongswan
 $(call Package/strongswan/Default)
   DEPENDS:= +libpthread +ip \
 	+kmod-crypto-authenc \
-	+kmod-ipsec +kmod-ipsec4 +kmod-ipsec6 \
+	+kmod-ipsec +kmod-ipsec4 +IPV6:kmod-ipsec6 \
 	+kmod-ipt-ipsec +iptables-mod-ipsec
 endef