extensions: libip6t_DNAT: add unit test

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/extensions/libipt_DNAT.t b/extensions/libipt_DNAT.t
new file mode 100644
index 0000000..e3fd563
--- /dev/null
+++ b/extensions/libipt_DNAT.t
@@ -0,0 +1,8 @@
+:PREROUTING
+*nat
+-j DNAT --to-destination 1.1.1.1;=;OK
+-j DNAT --to-destination 1.1.1.1-1.1.1.10;=;OK
+-p tcp -j DNAT --to-destination 1.1.1.1:1025-65535;=;OK
+-p tcp -j DNAT --to-destination 1.1.1.1-1.1.1.10:1025-65535;=;OK
+-p tcp -j DNAT --to-destination 1.1.1.1-1.1.1.10:1025-65536;;FAIL
+-j DNAT;;FAIL