PR suggestions

Author: internet-diglett

wicket/src/ui/panes/rack_setup.rs

@@ -715,7 +715,7 @@ fn rss_config_text<'a>(
             rack_network_config.as_ref().map_or("".into(), |c| {
                 match c.rack_subnet_address {
                     Some(v) => v.to_string(),
-                    None => "".to_string(),
+                    None => "(will be chosen randomly)".to_string(),
                 }
                 .into()
             }),

wicketd/src/rss_config.rs

@@ -714,6 +714,11 @@ pub fn validate_rack_subnet(
         return Err("rack number (seventh octet) cannot be 0".into());
     };
 
+    // Do not allow addresses more specific than /56
+    if rack_subnet_address.octets()[7..].iter().any(|x| *x != 0x00) {
+        return Err("rack subnet address is /56, but a more specific prefix was provided".into());
+    };
+
     Ipv6Net::new(rack_subnet_address, 56).map_err(|e| e.to_string())
 }