diff --git a/notes/linux.md b/notes/linux.md
index f5799d5..07d5482 100644
--- a/notes/linux.md
+++ b/notes/linux.md
@@ -435,6 +435,18 @@ exportfs -v
 
 ## Network Diagnostics
 
+**List network interfaces**
+
+```bash
+ip link show
+```
+
+**List network bridges and their attached interfaces**
+
+```bash
+brctl show
+```
+
 **Measure HTTP response timing:**
 
 Breaks down the full request lifecycle — useful for diagnosing DNS, TLS, or TTFB issues: