Merge branch 'develop-2.0.0' into fix/half-float-delta-position-dither

Author: NoelStephensUnity

com.unity.netcode.gameobjects/CHANGELOG.md

@@ -35,10 +35,10 @@ Additional documentation and release notes are available at [Multiplayer Documen
 
 ## [2.13.2] - 2026-08-16
 
-
-
 ### Fixed
 
+- Issue where in a distributed authority session changing a NetworkVariable prior to changing ownership in the same call-stack would result in the NetworkVariable not being synchronized. (#4107)
+- Resolved GC allocations in some hot paths. (#4119)
 - Issue with not being able to spawn initially disabled in-scene placed objects. (#4093)
 - Issue with pre-instantiated network prefab instances being marked as in-scene placed. Now pre-instantiated network prefabs are dynamically spawned. (#4093)
 - Issue where a user could spawn runtime created `NetworkObject` that has a GlobalObjectIdHash of zero. These are not valid instances and will no longer be allowed to spawn. (#4093)

com.unity.netcode.gameobjects/Runtime/Transports/UTP/UnityTransport.cs

@@ -520,6 +520,14 @@ public NetworkSettings GetDefaultNetworkSettings()
                 receiveQueueCapacity: m_MaxPacketQueueSize,
                 heartbeatTimeoutMS: m_HeartbeatTimeoutMS);
 
+            // Disable PMTU discovery if using DA, leave it at its default otherwise.
+            if (OnCurrentTopology() == NetworkTopologyTypes.DistributedAuthority)
+            {
+                var config = settings.GetNetworkConfigParameters();
+                config.performPathMtuDiscovery = false;
+                settings.AddRawParameterStruct(ref config);
+            }
+
             // Configure Relay if in use.
             if (m_ProtocolType == ProtocolType.RelayUnityTransport)
             {