/etc/logcheck/ignore.d.server/ipppd is in logcheck-database 1.3.14.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: Local number: [0-9]+, Remote number: [0-9]+, Type: outgoing$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: PHASE_WAIT -> PHASE_ESTABLISHED, ifunit: .*, linkunit: .*, fd:$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: Remote message: .*$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: MPPP negotiation, He: .* We: .*$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: CCP enabled! Trying CCP\.$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: CCP:$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: LCP terminated by peer$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: local IP address$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: remote IP address$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: ccp_resetci!$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: Modem hangup$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: Connection terminated\.i$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: taking down PHASE_DEAD link .*, linkunit:$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: closing fd [0-9]+ from unit$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: link .* closed , linkunit:$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: reinit_unit:$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ipppd\[[0-9]+\]: Connect\[[0-9]+\]: /dev/(ippp.|isdn.), fd: [0-9]+$
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