[syslog-ng] multi-line logs and program/facility filters

Hello, I have an Issue with syslog-ng 3.16.1 and multi-line logs. I try to configure per-application filters using either the program name or a facility. The applications use the traditional syslog() from syslog.h. When an application logs multiple lines, only the first line is filtered. Indeed, the program name or facility is only applied to the first line. Example : $ logger -t testprog "line1 line2 line3" $ cat /var/log/messages 2018-08-10T16:26:14.000000+02:00 testprog: line1 2018-08-10T16:26:14.899505+02:00 line2 2018-08-10T16:26:14.899505+02:00 line3 The log source is unix-stream("/dev/log" ); What can I do to fix this ? Thanks in advance for your help. Thanks & Regards, Michael