/etc/l7-protocols/protocols/uucp.pat is in l7-protocols 20090528-4.
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 | # UUCP - Unix to Unix Copy
# Pattern attributes: ok veryfast fast
# Protocol groups: document_retrieval obsolete
# Wiki: http://www.protocolinfo.org/wiki/UUCP
# Copyright (C) 2008 Matthew Strait, Ethan Sommer; See ../LICENSE
# This is completely untested! (I don't know how to use UUCP...)
# See http://docs.freebsd.org/info/uucp/uucp.info.The_Initial_Handshake.html
uucp
^\x10here=
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