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PiperOrigin-RevId: 700436394
diff --git a/quiche/common/quiche_feature_flags_list.h b/quiche/common/quiche_feature_flags_list.h
index ec1183e..01104c7 100755
--- a/quiche/common/quiche_feature_flags_list.h
+++ b/quiche/common/quiche_feature_flags_list.h
@@ -58,7 +58,7 @@
QUICHE_FLAG(bool, quiche_reloadable_flag_quic_update_transmission_info_on_frame_acked, false, true, "If true, QuicUnackedPacketMap will update transmission info after session_notifier_->OnFrameAcked.")
QUICHE_FLAG(bool, quiche_reloadable_flag_quic_use_alarm_multiplexer, false, false, "Manages all of the connection alarms via QuicAlarmMultiplexer.")
QUICHE_FLAG(bool, quiche_reloadable_flag_quic_use_received_client_addresses_cache, true, true, "If true, use a LRU cache to record client addresses of packets received on server's original address.")
-QUICHE_FLAG(bool, quiche_restart_flag_quic_support_flow_label2, false, false, "If true, QUIC will support reading and writing IPv6 flow labels.")
+QUICHE_FLAG(bool, quiche_restart_flag_quic_support_flow_label2, false, true, "If true, QUIC will support reading and writing IPv6 flow labels.")
QUICHE_FLAG(bool, quiche_restart_flag_quic_support_release_time_for_gso, false, false, "If true, QuicGsoBatchWriter will support release time if it is available and the process has the permission to do so.")
QUICHE_FLAG(bool, quiche_restart_flag_quic_testonly_default_false, false, false, "A testonly restart flag that will always default to false.")
QUICHE_FLAG(bool, quiche_restart_flag_quic_testonly_default_true, true, true, "A testonly restart flag that will always default to true.")
