[Unit]
Description=BIND Domain Name Server in chroot
Documentation=man:named(8)
After=network.target
Wants=nss-lookup.target
Before=nss-lookup.target

[Service]
EnvironmentFile=/chroot/named/etc/default/bind9
RootDirectory=/chroot/named
RootDirectoryStartOnly=no
ExecStart=/usr/sbin/named -f $OPTIONS
ExecReload=/usr/sbin/rndc reload
ExecStop=/usr/sbin/rndc stop

[Install]
WantedBy=multi-user.target