this file was missed during commit

diff --git a/extensions/.rt-test6 b/extensions/.rt-test6
new file mode 100755 (executable)
index 0000000..e8d5855
--- /dev/null
+++ b/extensions/.rt-test6
@@ -0,0 +1,2 @@
+#!/bin/sh
+[ -f $KERNEL_DIR/net/ipv6/netfilter/ip6t_rt.c -a -f $KERNEL_DIR/include/linux/netfilter_ipv6/ip6t_rt.h ] && echo rt