extensions: add more test cases for iptables-test.py

Instead of using iptables-save-formatted files in the tests/ dir,
lets use the iptables-test.py framework for all matches/targets.

This obsoletes tests/ completely, will be removed in followup patch.

Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
diff --git a/extensions/libip6t_DNAT.t b/extensions/libip6t_DNAT.t
new file mode 100644
index 0000000..3141c29
--- /dev/null
+++ b/extensions/libip6t_DNAT.t
@@ -0,0 +1,8 @@
+:PREROUTING
+*nat
+-j DNAT --to-destination dead::beef;=;OK
+-j DNAT --to-destination dead::beef-dead::fee7;=;OK
+-p tcp -j DNAT --to-destination [dead::beef]:1025-65535;=;OK
+-p tcp -j DNAT --to-destination [dead::beef-dead::fee7]:1025-65535;=;OK
+-p tcp -j DNAT --to-destination [dead::beef-dead::fee7]:1025-65536;;FAIL
+-j DNAT;;FAIL