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iptables: don't do reverse DNS lookups #92860

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merged 1 commit into from Jul 12, 2020
Merged

iptables: don't do reverse DNS lookups #92860

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5 changes: 4 additions & 1 deletion pkg/util/iptables/iptables.go
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Expand Up @@ -607,6 +607,9 @@ func (runner *runner) chainExists(table Table, chain Chain) (bool, error) {
runner.mu.Lock()
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defer runner.mu.Unlock()

trace := utiltrace.New("iptables Monitor CANARY check")
defer trace.LogIfLong(2 * time.Second)

_, err := runner.run(opListChain, fullArgs)
return err == nil, err
}
Expand All @@ -617,7 +620,7 @@ const (
opCreateChain operation = "-N"
opFlushChain operation = "-F"
opDeleteChain operation = "-X"
opListChain operation = "-L"
opListChain operation = "-S"
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opAppendRule operation = "-A"
opCheckRule operation = "-C"
opDeleteRule operation = "-D"
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