tests: py: add dnat to port without defining destination address

Add a test to cover dnat to port without destination address.

Closes: https://bugzilla.netfilter.org/show_bug.cgi?id=1428
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

3 files changed, 28 insertions, 0 deletions

diff --git a/tests/py/inet/dnat.t b/tests/py/inet/dnat.t
index b460af39..e4e169f2 100644
--- a/tests/py/inet/dnat.t
+++ b/tests/py/inet/dnat.t
@@ -6,6 +6,7 @@ iifname "foo" tcp dport 80 redirect to :8080;ok
 
 iifname "eth0" tcp dport 443 dnat ip to 192.168.3.2;ok
 iifname "eth0" tcp dport 443 dnat ip6 to [dead::beef]:4443;ok
+meta l4proto tcp dnat to :80;ok;meta l4proto 6 dnat to :80
 
 dnat ip to ct mark map { 0x00000014 : 1.2.3.4};ok
 dnat ip to ct mark . ip daddr map { 0x00000014 . 1.1.1.1 : 1.2.3.4};ok
diff --git a/tests/py/inet/dnat.t.json b/tests/py/inet/dnat.t.json
index 1b8aba62..c341a045 100644
--- a/tests/py/inet/dnat.t.json
+++ b/tests/py/inet/dnat.t.json
@@ -219,3 +219,23 @@
     }
 ]
 
+# meta l4proto tcp dnat to :80
+[
+    {
+        "match": {
+            "left": {
+                "meta": {
+                    "key": "l4proto"
+                }
+            },
+            "op": "==",
+            "right": 6
+        }
+    },
+    {
+        "dnat": {
+            "port": 80
+        }
+    }
+]
+
diff --git a/tests/py/inet/dnat.t.payload b/tests/py/inet/dnat.t.payload
index ca3ff631..ce1601ab 100644
--- a/tests/py/inet/dnat.t.payload
+++ b/tests/py/inet/dnat.t.payload
@@ -77,3 +77,10 @@ inet
   [ immediate reg 2 0x00005000 ]
   [ nat dnat ip addr_min reg 1 proto_min reg 2 flags 0x2 ]
 
+# meta l4proto tcp dnat to :80
+inet
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000006 ]
+  [ immediate reg 1 0x00005000 ]
+  [ nat dnat inet proto_min reg 1 flags 0x2 ]
+