I got that DHCP failed to start after a server update this morning.
Here's the dhcpd.log file entry:
Dec 21 08:49:43 mail dhcpd: Internet Systems Consortium DHCP Server 4.2.5
Dec 21 08:49:43 mail dhcpd: Copyright 2004-2013 Internet Systems Consortium.
Dec 21 08:49:43 mail dhcpd: All rights reserved.
Dec 21 08:49:43 mail dhcpd: For info, please visit https://www.isc.org/software/dhcp/
Dec 21 08:49:43 mail dhcpd: WARNING: Host declarations are global. They are not limited to the scope you declared them in.
Dec 21 08:49:43 mail dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file
Dec 21 08:49:43 mail dhcpd: Wrote 0 deleted host decls to leases file.
Dec 21 08:49:43 mail dhcpd: Wrote 0 new dynamic host decls to leases file.
Dec 21 08:49:43 mail dhcpd: Wrote 141 leases to leases file.
Dec 21 08:49:43 mail dhcpd:
Dec 21 08:49:43 mail dhcpd: No subnet declaration for eth0 (no IPv4 addresses).
Dec 21 08:49:43 mail dhcpd: ** Ignoring requests on eth0. If this is not what
Dec 21 08:49:43 mail dhcpd: you want, please write a subnet declaration
Dec 21 08:49:43 mail dhcpd: in your dhcpd.conf file for the network segment
Dec 21 08:49:43 mail dhcpd: to which interface eth0 is attached. **
Dec 21 08:49:43 mail dhcpd:
Dec 21 08:49:43 mail dhcpd:
Dec 21 08:49:43 mail dhcpd: Not configured to listen on any interfaces!
Dec 21 08:49:43 mail dhcpd:
Dec 21 08:49:43 mail dhcpd: This version of ISC DHCP is based on the release available
Dec 21 08:49:43 mail dhcpd: on ftp.isc.org. Features have been added and other changes
Dec 21 08:49:43 mail dhcpd: have been made to the base software release in order to make
Dec 21 08:49:43 mail dhcpd: it work better with this distribution.
Dec 21 08:49:43 mail dhcpd:
Dec 21 08:49:43 mail dhcpd: Please report for this software via the CentOS Bugs Database:
Dec 21 08:49:43 mail dhcpd: http://bugs.centos.org/
Dec 21 08:49:43 mail dhcpd:
Dec 21 08:49:43 mail dhcpd: exiting.
What do I need to do to resolve this?