Failed to to start Clean up any mess left by 0dns-op解决方

dns-clean.service 报错

[Failed] Failed to start Clean up any mess left by Odns-up. See systemctl status dns-clean.service for details.

　　

# vim /lib/systemd/system/dns-clean.service 

#ExecStartPre=/bin/mkdir /var/run/pppconfig
ExecStartPre=/bin/mkdir -p  /var/run/pppconfig

# reboot
1