fix(gva): ip v6 log must be surrounded by []

src/lib.rs

@@ -318,7 +318,7 @@ impl GvaModule {
         );
         if let Some(ip6) = conf.ip6 {
             log::info!(
-                "GVA server listen on http://{}:{}/{}",
+                "GVA server listen on http://[{}]:{}/{}",
                 ip6,
                 conf.port,
                 &conf.path