IPsec debug log settings not applied after stop/start or restart
Debug log levels after a stop/start or restart rely on charondebug in ipsec.conf. But:
"Logger configurations in strongswan.conf have a higher priority than charondebug in ipsec.conf: If you define any loggers in strongswan.conf, charondebug does not have any effect at all."
the debug log levels must be specified in strongswan.conf rather than as charondebug.