diff --git a/ansible/roles/edge-host/templates/80-can0.network.j2 b/ansible/roles/edge-host/templates/80-can0.network.j2
index b091154a..246dd95f 100644
--- a/ansible/roles/edge-host/templates/80-can0.network.j2
+++ b/ansible/roles/edge-host/templates/80-can0.network.j2
@@ -11,5 +11,7 @@ ActivationPolicy=always-up
 
 [CAN]
 BitRate={{ edge_can_bitrate }}
-# Auto-recover the link if the controller ever goes bus-off.
-RestartSec=1s
+# NO RestartSec here: gs_usb does not support hardware bus-off restart,
+# and networkd fails the ENTIRE link configuration on the unsupported
+# option ("off (failed)", link never raised — found by reboot test).
+# Bus-off recovery falls to the open3e service restart loop.