This file is indexed.

/etc/logcheck/ignore.d.server/dhclient is in logcheck-database 1.3.18.

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
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: Internet Systems Consortium DHCP Client [.[:alnum:]-]+$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: Copyright 2004-20[[:digit:]]{2} Internet Systems Consortium\.$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: All rights reserved\.$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: For info, please visit https://www\.isc\.org/software/dhcp/$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]:$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\] Trying recorded lease [.0-9]{7,15}$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: DHCP(NAK|ACK|OFFER) (of [.0-9]{7,15} )?from [.0-9]{7,15}( \(xid=0x[0-9a-f]{8}\))?$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: DHCP(REQUEST|RELEASE) (of [.0-9]{7,15} )?on [[:alnum:].-]+ to [.0-9]{7,15} port 67( \(xid=0x[0-9a-f]{8}\))?$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: DHCPDISCOVER on [[:alnum:].-]+ to [.0-9]{7,15} port 67 interval [0-9]+( \(xid=0x[0-9a-f]{8}\))?$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: Killed old client process$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: Listening on [^[:space:].]+$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: No DHCPOFFERS received\.$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: No working leases in persistent database - sleeping\.$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: Sending on[[:space:]]+[^[:space:]]+$
^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ dhclient\[[[:digit:]]+\]: bound to [.0-9]{7,15} -- renewal in [0-9]+ seconds\.$