This file is indexed.

/usr/share/shorewall/macro.L2TP is in shorewall 5.0.15.6-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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#
# Shorewall -- /usr/share/shorewall/macro.L2TP
#
# This macro (bidirectional) handles Layer 2 Tunneling Protocol traffic.
# (RFC 2661)
#
###############################################################################
#ACTION	SOURCE	DEST	PROTO	DPORT	SPORT	ORIGDEST	RATE	USER

PARAM	-	-	udp	1701	# L2TP
PARAM	DEST	SOURCE	udp	1701	# L2TP