/etc/bash_completion.d/lxctl_create is in lxctl 0.3.1+debian-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | LXCTL_PLUGINS="$LXCTL_PLUGINS create"
LXCTL_PLUGIN_create="--ipaddr --hostname --ostemplate --config --roottype --root --rootsz --netmask --defgw --dns --macaddr --autostart --empty --load --debug --searchdomain --tz --fs --mkfsopts --mountoptions --mtu --userpasswd --pkgopt --addpkg"
LXCTL_PLUGIN_USE_VMNAME_create="yes"
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