Enhance traffic control by dynamically detecting outgoing interface and updating iptables rules for upload and download traffic

README.md

@@ -70,11 +70,13 @@ Set bidirectional bandwidth limits for a peer (controls both upload and download
 }
 ```
 *Note: 125000 bytes/s = 1000 kbps = 1 Mbps*
+*Use -1 for unlimited speed*
 
 **Common Speed Conversions:**
 - 125 KB/s = 1 Mbps
 - 1,250 KB/s = 10 Mbps  
 - 12,500 KB/s = 100 Mbps
+- -1 = Unlimited
 
 #### `POST /api/peers/data-cap`
 Set total data usage limits for a peer using iptables quota rules.
@@ -87,11 +89,13 @@ Set total data usage limits for a peer using iptables quota rules.
 }
 ```
 *Note: 1073741824 bytes = 1 GB*
+*Use -1 for unlimited data*
 
 **Common Data Conversions:**
 - 1 GB = 1,073,741,824 bytes
 - 10 GB = 10,737,418,240 bytes
 - 100 GB = 107,374,182,400 bytes
+- -1 = Unlimited
 
 #### `POST /api/peers/config`
 Retrieve peer configuration (currently not implemented - returns 404).