diff --git a/firmware/main/net.c b/firmware/main/net.c
index ef3006d..bbf58ad 100644
--- a/firmware/main/net.c
+++ b/firmware/main/net.c
@@ -44,7 +44,6 @@ static void static_ip_fallback(void *arg)
         esp_sntp_config_t sntp = ESP_NETIF_SNTP_DEFAULT_CONFIG("pool.ntp.org");
         esp_netif_sntp_init(&sntp);
         gw_start();
-        start_ping_diag();
     }
     vTaskDelete(NULL);
 }
@@ -91,7 +90,6 @@ static void wifi_event(void *arg, esp_event_base_t base, int32_t id, void *data)
         esp_sntp_config_t sntp = ESP_NETIF_SNTP_DEFAULT_CONFIG("pool.ntp.org");
         esp_netif_sntp_init(&sntp);
         gw_start();
-        start_ping_diag();
     }
 }
 
@@ -144,16 +142,10 @@ static void start_ping_diag(void)
 /* boot diagnosis: can the device reach the router at all? then the server? */
 static void ping_diag_task(void *arg)
 {
+    /* Boot-time diagnostic burst removed: it stressed the freshly-recovered
+     * SDIO link on every reboot and correlated with fast re-wedges. Kept as a
+     * no-op symbol; call ping_target()/esp_wifi_statis_dump() manually if needed. */
     (void)arg;
-    vTaskDelay(pdMS_TO_TICKS(3000));
-    ESP_LOGI(TAG, "== ping diagnosis: router ==");
-    ping_target("192.168.86.1");
-    vTaskDelay(pdMS_TO_TICKS(6000));
-    ESP_LOGI(TAG, "== ping diagnosis: tower-of-joy ==");
-    ping_target("192.168.86.149");
-    vTaskDelay(pdMS_TO_TICKS(6000));
-    ESP_LOGI(TAG, "== slave wifi statistics dump ==");
-    esp_wifi_statis_dump(0xFFFFFFFF);
     vTaskDelete(NULL);
 }