feat(security): enforce packet authenticity policies

src/mesh/NextHopRouter.h

@@ -137,6 +137,7 @@ class NextHopRouter : public FloodingRouter
      * @return true to abandon the packet
      */
     virtual bool shouldFilterReceived(const meshtastic_MeshPacket *p) override;
+    bool relayOpaquePacket(const meshtastic_MeshPacket *p) override;
 
     /**
      * Look for packets we need to relay
@@ -209,4 +210,4 @@ class NextHopRouter : public FloodingRouter
     /** Check if we should be rebroadcasting this packet if so, do so.
      *  @return true if we did rebroadcast */
     bool perhapsRebroadcast(const meshtastic_MeshPacket *p) override;
-};
+};