输出增加颜色

vnt/src/handle/callback.rs

@@ -165,6 +165,7 @@ pub enum ErrorType {
     AddressExhausted,
     IpAlreadyExists,
     InvalidIp,
+    LocalIpExists,
     Unknown,
 }
 
@@ -176,7 +177,8 @@ impl Into<u8> for ErrorType {
             ErrorType::AddressExhausted => 3,
             ErrorType::IpAlreadyExists => 4,
             ErrorType::InvalidIp => 5,
-            ErrorType::Unknown => 6,
+            ErrorType::LocalIpExists => 6,
+            ErrorType::Unknown => 255,
         }
     }
 }

vnt/src/handle/recv_data/server.rs

@@ -262,7 +262,7 @@ impl<Call: VntCallback> ServerPacketHandler<Call> {
                         }
                         if let Err(e) = self.device.set_ip(virtual_ip, virtual_netmask) {
                             self.callback.error(ErrorInfo::new_msg(
-                                ErrorType::Unknown,
+                                ErrorType::LocalIpExists,
                                 format!("set_ip {:?}", e),
                             ));
                             return Ok(());