/etc/logcheck/ignore.d.server/smokeping is in logcheck-database 1.3.16.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ smokeping\[[0-9]+\]: Launched successfully$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ smokeping\[[0-9]+\]: FPing: probing [0-9]+ targets$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ smokeping\[[0-9]+\]: FPing6: probing [0-9]+ targets$
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