(ipfw) make use of secondary interface in dummynet rules

src/opnsense/service/templates/OPNsense/IPFW/ipfw.conf

@@ -145,11 +145,26 @@ add 60000 return via any
 {%                if helpers.getUUIDtag(rule.target) == 'pipe' or
                      helpers.getUUID(helpers.getUUID(rule.target).pipe).enabled|default('0') == '1'
 %}
+{%                       if rule.interface2 and helpers.getNodeByTag('interfaces.'+rule.interface2) %}
+{#  2 interface defined, use both to match packets (2 rules)  #}
 add {{loop.index  + 60000}} {{ helpers.getUUIDtag(rule.target) }} {{
-helpers.getUUID(rule.target).number }} {{ rule.proto }} from {{ rule.source }} to {{rule.destination
-}} src-port  {{ rule.src_port }} dst-port {{ rule.dst_port }}  {{rule.direction}} via {{
-helpers.getNodeByTag('interfaces.'+rule.interface).if
-}}
+    helpers.getUUID(rule.target).number }} {{ rule.proto }} from {{ rule.source }} to {{rule.destination
+    }} src-port  {{ rule.src_port }} dst-port {{ rule.dst_port }} {{rule.direction}} recv {{
+    helpers.getNodeByTag('interfaces.'+rule.interface).if }} xmit {{helpers.getNodeByTag('interfaces.'+rule.interface2).if
+    }}
+add {{loop.index  + 60000}} {{ helpers.getUUIDtag(rule.target) }} {{
+    helpers.getUUID(rule.target).number }} {{ rule.proto }} from {{ rule.source }} to {{rule.destination
+    }} src-port  {{ rule.src_port }} dst-port {{ rule.dst_port }} {{rule.direction}} xmit {{
+    helpers.getNodeByTag('interfaces.'+rule.interface).if }} recv {{helpers.getNodeByTag('interfaces.'+rule.interface2).if
+    }}
+{%                       else %}
+{#  normal, single interface situation  #}
+add {{loop.index  + 60000}} {{ helpers.getUUIDtag(rule.target) }} {{
+    helpers.getUUID(rule.target).number }} {{ rule.proto }} from {{ rule.source }} to {{rule.destination
+    }} src-port  {{ rule.src_port }} dst-port {{ rule.dst_port }} {{rule.direction}} via {{
+    helpers.getNodeByTag('interfaces.'+rule.interface).if
+    }}
+{%                       endif %}
 {%                   endif %}
 {%            endif %}
 {%        endif %}