diff --git a/NucleicRemote/NucleicRemote/Models/HostConnection.swift b/NucleicRemote/NucleicRemote/Models/HostConnection.swift
index 654ab5f..8436ad5 100644
--- a/NucleicRemote/NucleicRemote/Models/HostConnection.swift
+++ b/NucleicRemote/NucleicRemote/Models/HostConnection.swift
@@ -201,6 +201,18 @@ final class HostConnection {
             relayMembershipToken: nil, relayURL: nil)
     }
 
+    /// Whether the dialable endpoints of a gossiped record differ from the one on file — the
+    /// signal that a known Mac must be re-dialed (its LAN port, tailnet IP, or relay room moved).
+    /// Ignores relay *credentials* (token/URL), which `mergePairedHost` preserves and which don't
+    /// change where the Mac is reached.
+    private static func dialableAddressChanged(from existing: PairedHost, to incoming: PairedHost) -> Bool {
+        existing.lanHost != incoming.lanHost
+            || existing.lanPort != incoming.lanPort
+            || existing.tailnetHost != incoming.tailnetHost
+            || existing.tailnetPort != incoming.tailnetPort
+            || existing.relayRoomID != incoming.relayRoomID
+    }
+
     /// Split a "host:port" hint (last-colon split so a bracketed IPv6 host survives).
     private static func splitHostPort(_ hint: String?) -> (String?, UInt16?) {
         guard let hint, let colon = hint.lastIndex(of: ":"),