autoneg fix 2

backend/src/utilities/bridge_link_state_manager.py

@@ -557,9 +557,8 @@ class BridgeLinkStateWatcher:
         if source_profile.autoneg is True:
             if source_profile.speed_mbps is not None and source_profile.duplex is not None:
                 # A remote peer can pull this port down to a lower negotiated speed while autoneg
-                # stays enabled locally. Mirror the effective link mode on sibling ports so they
-                # present the same downstream behavior even though the peer's exact advertisement
-                # bitmap is not visible from this host.
+                # stays enabled locally. Mirror that effective mode while keeping autoneg enabled
+                # on the sibling so its far-end peer can still negotiate successfully.
                 cmd.extend(
                     [
                         "speed",
@@ -567,12 +566,12 @@ class BridgeLinkStateWatcher:
                         "duplex",
                         source_profile.duplex,
                         "autoneg",
-                        "off",
+                        "on",
                     ]
                 )
                 change_summary = (
                     f"{target_ifname} link={source_profile.speed_mbps}Mb/"
-                    f"{source_profile.duplex}/forced-from-autoneg-peer"
+                    f"{source_profile.duplex}/autoneg-on"
                 )
             else:
                 cmd.extend(["autoneg", "on"])