/etc/init/tty6.conf is in upstart 1.12.1-0ubuntu4.
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 | # tty6 - getty
#
# This service maintains a getty on tty6 from the point the system is
# started until it is shut down again.
start on runlevel [23] and not-container
stop on runlevel [!23]
respawn
exec /sbin/getty -8 38400 tty6
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