diff --git a/pkg/kubelet/network/dns/dns.go b/pkg/kubelet/network/dns/dns.go
index 65f5911a35d..4afebc2152c 100644
--- a/pkg/kubelet/network/dns/dns.go
+++ b/pkg/kubelet/network/dns/dns.go
@@ -230,7 +230,7 @@ func parseResolvConf(reader io.Reader) (nameservers []string, searches []string,
 			}
 		}
 		if fields[0] == "search" {
-			// Strip redundant trailing dot to avoid hitting search validation limits.
+			// Normalise search fields so the same domain with and without trailing dot will only count once, to avoid hitting search validation limits.
 			trimTrailingDot := []string{}
 			for _, s := range fields[1:] {
 				trimTrailingDot = append(trimTrailingDot, strings.TrimSuffix(s, "."))