Remove unnecessary imports

iputil/iputil.go

@@ -26,12 +26,12 @@ func LookupPort(ip net.IP, port uint64) error {
 	return nil
 }
 
-func ToDecimal(ip net.IP) *big.Int {
+func ToDecimal(ip net.IP) uint64 {
 	i := big.NewInt(0)
 	if to4 := ip.To4(); to4 != nil {
 		i.SetBytes(to4)
 	} else {
 		i.SetBytes(ip)
 	}
-	return i
+	return i.Uint64()
 }

iputil/iputil_test.go

@@ -1,7 +1,6 @@
 package iputil
 
 import (
-	"math/big"
 	"net"
 	"testing"
 )
@@ -9,14 +8,14 @@ import (
 func TestToDecimal(t *testing.T) {
 	var tests = []struct {
 		in  string
-		out *big.Int
+		out uint64
 	}{
-		{"127.0.0.1", big.NewInt(2130706433)},
-		{"::1", big.NewInt(1)},
+		{"127.0.0.1", 2130706433},
+		{"::1", 1},
 	}
 	for _, tt := range tests {
 		i := ToDecimal(net.ParseIP(tt.in))
-		if i.Cmp(tt.out) != 0 {
+		if tt.out != i {
 			t.Errorf("Expected %d, got %d for IP %s", tt.out, i, tt.in)
 		}
 	}