Multiple LXD Service files

$ dpkg -s lxd
Package: lxd
Status: install ok installed
Priority: optional
Section: admin
Installed-Size: 12654
Maintainer: Ubuntu Developers <[email protected]>
Architecture: amd64
Version: 2.9.3-0ubuntu2~ubuntu16.04.1~ppa1
Depends: acl, adduser, dnsmasq-base, ebtables, iptables, liblxc1 (>= 2.0.0~), lsb-base (>= 4.1+Debian11ubuntu7), lxd-client (= 2.9.3-0ubuntu2~ubuntu16.04.1~ppa1), lxcfs, rsync, squashfs-tools, uidmap, xz-utils, init-system-helpers (>= 1.18~), libc6 (>= 2.14), libsqlite3-0 (>= 3.7.15)
Suggests: criu, lxd-tools
Conffiles:
 /etc/dnsmasq.d-available/lxd c72be7e51163b9fa73e2eb8986958986
 /etc/init.d/lxd 9d2a101c9d9a5484f16607f4d7e10c4d
 /etc/init/lxd.conf a4278d4c51985f421e46182eeb7803da
 /etc/logrotate.d/lxd 312901c6c80bd878756257952fd24068
Description: Container hypervisor based on LXC - daemon
 LXD offers a REST API to remotely manage containers over the network,
 using an image based workflow and with support for live migration.
 .
 This package contains the LXD daemon.
Built-Using: golang-1.6 (= 1.6.2-0ubuntu5~16.04)
Homepage: https://linuxcontainers.org/

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$ dpkg -L lxd|grep 'service\|init.d'
/lib/systemd/system/lxd-containers.service
/lib/systemd/system/lxd.service
/etc/init.d
/etc/init.d/lxd