func CheckDuplicates(hosts []string, bind string, knownHosts map[string]string) []string {
	var duplicates []string
	for _, h := range hosts {
		if existingBind, ok := knownHosts[h]; ok && bind == existingBind {
			duplicates = append(duplicates, h)
		}
	}
	// No duplicates found, so we can mark all of these hosts as known
	if len(duplicates) == 0 {
		for _, h := range hosts {
			knownHosts[h] = bind
		}
	}
	return duplicates

	// add a few known hostnames
	knownHosts := []string{"istiod", "istiod-remote", "istio-pilot"}
	// In some conditions, pilot address for sds is different from other xds,
	// like multi-cluster primary-remote mode with revision.
	if args.Revision != "" && args.Revision != "default" {
		knownHosts = append(knownHosts, "istiod"+"-"+args.Revision)
	}

[short] skip
[!exec:svn] skip

# 'go mod download' will fall back to svn+ssh once svn fails over protocols like https.
# If vcs-test.golang.org isn't in the user's known_hosts file, this will result
# in an ssh prompt, which will stop 'go test' entirely
#
# Unfortunately, there isn't a way to globally disable host checking for ssh,
# without modifying the real system's or user's configs. Changing $HOME won't