Merge pull request #1974 from cpuguy83/iptables_no_dns_lookup

mavenugo · web-flow · commit 6c512920fef4 · 2017-10-07T06:45:47.000-07:00
Disable hostname lookup on chain exists check
diff --git a/iptables/iptables.go b/iptables/iptables.go
@@ -456,7 +456,7 @@ func RawCombinedOutputNative(args ...string) error {
 
 // ExistChain checks if a chain exists
 func ExistChain(chain string, table Table) bool {
-	if _, err := Raw("-t", string(table), "-L", chain); err == nil {
+	if _, err := Raw("-t", string(table), "-nL", chain); err == nil {
 		return true
 	}
 	return false

Original file line number	Diff line number	Diff line change
`@@ -456,7 +456,7 @@ func RawCombinedOutputNative(args ...string) error {`
`456`	`456`
`457`	`457`	`// ExistChain checks if a chain exists`
`458`	`458`	`func ExistChain(chain string, table Table) bool {`
`459`		`- if _, err := Raw("-t", string(table), "-L", chain); err == nil {`
	`459`	`+ if _, err := Raw("-t", string(table), "-nL", chain); err == nil {`
`460`	`460`	`return true`
`461`	`461`	`}`
`462`	`462`	`return false`