v1.10.3

ADDED:
* netx now has a ton of netmask conversion functions for IPv4 netmasks.
  (IPv6 doesn't really *have* netmasks, so it was intentionally
  excluded).

netx/consts_nix.go

@@ -0,0 +1,13 @@
+//go:build !windows
+
+package netx
+
+import (
+	`golang.org/x/sys/unix`
+)
+
+const (
+	AFUnspec uint16 = unix.AF_UNSPEC
+	AFInet   uint16 = unix.AF_INET
+	AFInet6  uint16 = unix.AF_INET6
+)