I can get this to work, but I prefer to log to /dev/log
appender.syslog.type = Syslog
appender.syslog.name = syslog
appender.syslog.host = xxxxxxxx.local
appender.syslog.port = 514
appender.syslog.protocol = UDP
appender.syslog.facility = LOCAL0
appender.syslog.layout.type = PatternLayout
appender.syslog.layout.pattern = [%node_name] %m%n