This file is indexed.

/etc/logcheck/ignore.d.paranoid/ppp 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.

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^\w{3} [ :0-9]{11} [._[:alnum:]-]+ pppd\[[0-9]+\]: (sent|rcvd) \[LCP EchoReq id=[[:alnum:]]+ magic=[ [:alnum:]]+\]$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ pppd\[[0-9]+\]: (sent|rcvd) \[LCP EchoRep id=[[:alnum:]]+ magic=[ [:alnum:]]+\]$