1. See "systemctl status isc-dhcp-server.service" and "journalctl -xe" for details.
  2. invoke-rc.d: initscript isc-dhcp-server, action "start" failed.
  3. ● isc-dhcp-server.service - LSB: DHCP server
  4. Loaded: loaded (/etc/init.d/isc-dhcp-server; generated; vendor preset: enabled)
  5. Active: failed (Result: exit-code) since Fri 2017-10-27 18:38:27 UTC; 478ms ago
  6. Docs: man:systemd-sysv-generator(8)
  7. Process: 6877 ExecStart=/etc/init.d/isc-dhcp-server start (code=exited, status=1/FAILURE)
  9. Oct 27 18:38:24 raspberrypi systemd[1]: Starting LSB: DHCP server...
  10. Oct 27 18:38:24 raspberrypi isc-dhcp-server[6877]: Launching both IPv4 and IP…).
  11. Oct 27 18:38:25 raspberrypi dhcpd[6889]: Wrote 0 leases to leases file.
  12. Oct 27 18:38:25 raspberrypi dhcpd[6889]:
  13. Oct 27 18:38:27 raspberrypi isc-dhcp-server[6877]: Starting ISC DHCPv4 server…d!
  14. Oct 27 18:38:27 raspberrypi isc-dhcp-server[6877]: failed!
  15. Oct 27 18:38:27 raspberrypi systemd[1]: isc-dhcp-server.service: Control pro…s=1
  16. Oct 27 18:38:27 raspberrypi systemd[1]: Failed to start LSB: DHCP server.
  17. Oct 27 18:38:27 raspberrypi systemd[1]: isc-dhcp-server.service: Unit entere…te.
  18. Oct 27 18:38:27 raspberrypi systemd[1]: isc-dhcp-server.service: Failed with…e'.