in internal/util/util.go [192:210]
func CleanUpAll(
killC *KillChannels,
receiverOnlyMode bool,
senderOnlyMode bool,
resolveDNS bool,
conn *ip.Conn,
PIDPath string,
sr metrics.Reporter,
logger *log.Logger,
) {
CleanUpRefresh(killC, receiverOnlyMode, senderOnlyMode, resolveDNS)
conn.Close(logger)
sr.Close()
RemovePID(PIDPath, logger)
}