diff --git a/network/net.go b/network/net.go
index 61062629..17b26823 100644
--- a/network/net.go
+++ b/network/net.go
@@ -29,11 +29,25 @@ const (
 
 var (
 	BroadcastHw        = []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}
-	IPv4Validator      = regexp.MustCompile(`^[0-9\.]+/?\d*$`)
-	IPv4RangeValidator = regexp.MustCompile(`^[0-9\.\-]+/?\d*$`)
-	MACValidator       = regexp.MustCompile(`(?i)^[a-f0-9]{1,2}:[a-f0-9]{1,2}:[a-f0-9]{1,2}:[a-f0-9]{1,2}:[a-f0-9]{1,2}:[a-f0-9]{1,2}$`)
+	IPv4BlockValidator = regexp.MustCompile(`^` +
+		`(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])\.` +
+		`(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])\.` +
+		`(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])\.` +
+		`(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])` +
+		`/(?:3[0-2]|2[0-9]|[1]?[0-9])` + `$`)
+	IPv4RangeValidator = regexp.MustCompile(`^` +
+		`(?:(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])-)?(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])\.` +
+		`(?:(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])-)?(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])\.` +
+		`(?:(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])-)?(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])\.` +
+		`(?:(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])-)?(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])` + `$`)
+	IPv4Validator = regexp.MustCompile(`^` +
+		`(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])\.` +
+		`(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])\.` +
+		`(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])\.` +
+		`(?:25[0-5]|2[0-4][0-9]|[1][0-9]{2}|[1-9]?[0-9])` + `$`)
+	MACValidator = regexp.MustCompile(`(?i)^(?:[a-f0-9]{2}:){5}[a-f0-9]{2}$`)
 	// lulz this sounds like a hamburger
-	macParser   = regexp.MustCompile(`(?i)([a-f0-9]{1,2}:[a-f0-9]{1,2}:[a-f0-9]{1,2}:[a-f0-9]{1,2}:[a-f0-9]{1,2}:[a-f0-9]{1,2})`)
+	macParser   = regexp.MustCompile(`(?i)((?:[a-f0-9]{2}:){5}[a-f0-9]{2})`)
 	aliasParser = regexp.MustCompile(`(?i)([a-z_][a-z_0-9]+)`)
 )