Проблема с сервером DHCP на сервере Ubuntu

, когда я перезапускаю DHCP-сервер, это сообщения, которые я получаю от syslog

Feb 10 19:17:50 mustafa-sr1 dhcpd: All rights reserved.
Feb 10 19:17:50 mustafa-sr1 dhcpd: For info, please visit https://www.isc.org/software/dhcp/
Feb 10 19:17:50 mustafa-sr1 dhcpd: Wrote 0 leases to leases file.
Feb 10 19:17:50 mustafa-sr1 dhcpd:
Feb 10 19:17:50 mustafa-sr1 dhcpd: No subnet declaration for eth0:138 (0.0.0.0).
Feb 10 19:17:50 mustafa-sr1 dhcpd: ** Ignoring requests on eth0:138.  If this is not what
Feb 10 19:17:50 mustafa-sr1 dhcpd:    you want, please write a subnet declaration
Feb 10 19:17:50 mustafa-sr1 dhcpd:    in your dhcpd.conf file for the network segment
Feb 10 19:17:50 mustafa-sr1 dhcpd:    to which interface eth0:138 is attached. **
Feb 10 19:17:50 mustafa-sr1 dhcpd:
Feb 10 19:17:50 mustafa-sr1 dhcpd:
Feb 10 19:17:50 mustafa-sr1 dhcpd: Not configured to listen on any interfaces!