I tried to setup simple relay with syslog-ng, it receives log on one port and forward to the destination. It works fine when destination is available, but when destination unavailable for a short period of time and then became available I miss one log entry.

For example assume that I send simple numbers with logger command to syslog-ng, from 0 to 100, when I receive 50 on destination I stop its listener and start it again, in this case the first log entry that I receive is 52 instead of 51.

Here is my syslog-ng.conf:

@version: 3.26

options {
  time_reopen(5);
};

source s_network {
  network(
    ip("127.0.0.1")
    port(514)
    transport("udp")
  );
};

destination d_network {
  network(
    "127.0.0.1"
    port(5514)
    transport("udp")

  );
};

log {
  source(s_network);
  destination(d_network);
};

Would you please help me to resolve this issue?

Regards,

Ali