Fix issue with network netmask handling

virtweb_backend/Cargo.lock

@@ -1387,6 +1387,15 @@ version = "2.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28b29a3cd74f0f4598934efe3aeba42bae0eb4680554128851ebbecb02af14e6"
 
+[[package]]
+name = "ipnetwork"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf466541e9d546596ee94f9f69590f89473455f88372423e0008fc1a7daf100e"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "is-terminal"
 version = "0.4.9"
@@ -2569,6 +2578,7 @@ dependencies = [
  "futures",
  "futures-util",
  "image",
+ "ipnetwork",
  "lazy-regex",
  "lazy_static",
  "light-openid",