Systemd unit "dnsdist@.service" is broken starting from version
2.0.0-2 and up to current 2.0.0-4.
Notable changes:
```diff
--- a/dnsdist@.service-2.0.0-1
+++ b/dnsdist@.service-2.0.0-2
@@ -1,17 +1,17 @@
[Unit]
-Description=DNS Loadbalancer
+Description=DNS Loadbalancer %i
Documentation=man:dnsdist(1)
Documentation=https://dnsdist.org
Wants=network-online.target
After=network-online.target time-sync.target
[Service]
-ExecStartPre=/usr/bin/dnsdist --config /etc/dnsdist/dnsdist-%i.conf
--check-config
+ExecStartPre=/usr/bin/dnsdist --check-config
# Note: when editing the ExecStart command, keep --supervised and
--disable-syslog
-ExecStart=/usr/bin/dnsdist --config /etc/dnsdist/dnsdist-%i.conf
--supervised --disable-syslog
+ExecStart=/usr/bin/dnsdist --supervised --disable-syslog
User=_dnsdist
Group=_dnsdist
-SyslogIdentifier=dnsdist-%i
+SyslogIdentifier=dnsdist
Type=notify
Restart=on-failure
RestartSec=2
```
Proposed changes:
```diff
--- a/dnsdist@.service-2.0.0-2
+++ b/dnsdist@.service-proposed
@@ -6,9 +6,9 @@ Wants=network-online.target
After=network-online.target time-sync.target
[Service]
-ExecStartPre=/usr/bin/dnsdist --check-config
+ExecStartPre=/usr/bin/dnsdist --config /etc/dnsdist/dnsdist-%i.conf
--check-config
# Note: when editing the ExecStart command, keep --supervised and
--disable-syslog
-ExecStart=/usr/bin/dnsdist --supervised --disable-syslog
+ExecStart=/usr/bin/dnsdist --config /etc/dnsdist/dnsdist-%i.conf
--supervised --disable-syslog
User=_dnsdist
Group=_dnsdist
SyslogIdentifier=dnsdist
```