diff --git a/crates/lanparty-client-core/src/lib.rs b/crates/lanparty-client-core/src/lib.rs
index c514f71..9b4a0a2 100644
--- a/crates/lanparty-client-core/src/lib.rs
+++ b/crates/lanparty-client-core/src/lib.rs
@@ -1066,6 +1066,37 @@ mod tests {
         assert_eq!(snapshot.malformed_frames(), 1);
     }
 
+    #[test]
+    fn accepts_lan_destinations_for_client_tap() {
+        let virtual_mac = MacAddr::new([0x02, 0, 0, 0, 0, 1]);
+        let lan_source = MacAddr::new([0x0a, 0, 0, 0, 0, 2]);
+
+        assert!(accepted_relay_destination(
+            virtual_mac,
+            lan_source,
+            virtual_mac,
+            b"directed",
+        ));
+        assert!(accepted_relay_destination(
+            MacAddr::BROADCAST,
+            lan_source,
+            virtual_mac,
+            b"broadcast",
+        ));
+        assert!(accepted_relay_destination(
+            MacAddr::new([0x01, 0x00, 0x5e, 0, 0, 1]),
+            lan_source,
+            virtual_mac,
+            b"multicast",
+        ));
+        assert!(!accepted_relay_destination(
+            MacAddr::new([0x02, 0, 0, 0, 0, 9]),
+            lan_source,
+            virtual_mac,
+            b"wrong client",
+        ));
+    }
+
     #[test]
     fn converts_relay_rtt_to_milliseconds() {
         assert_eq!(duration_millis_saturating(Duration::from_micros(999)), 0);
@@ -1168,6 +1199,23 @@ mod tests {
         frame
     }
 
+    fn accepted_relay_destination(
+        destination: MacAddr,
+        source: MacAddr,
+        virtual_mac: MacAddr,
+        payload: &[u8],
+    ) -> bool {
+        let bytes = ethernet_frame_with_headers(
+            destination,
+            source,
+            lanparty_proto::ETHERTYPE_IPV4,
+            payload,
+        );
+        let frame = EthernetFrame::parse(&bytes).unwrap();
+
+        is_accepted_relay_destination(frame, virtual_mac)
+    }
+
     fn unique_temp_identity_path() -> std::path::PathBuf {
         let nanos = SystemTime::now()
             .duration_since(UNIX_EPOCH)