Description of problem:

Jun  5 00:14:12 underdark dhcpd: Internet Systems Consortium DHCP Server 4.2.4rc1
Jun  5 00:14:12 underdark dhcpd: Copyright 2004-2012 Internet Systems Consortium.
Jun  5 00:14:12 underdark dhcpd: All rights reserved.
Jun  5 00:14:12 underdark dhcpd: For info, please visit https://www.isc.org/software/dhcp/
...
Jun  5 00:14:12 underdark dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file
Jun  5 00:14:12 underdark dhcpd: Wrote 0 deleted host decls to leases file.
Jun  5 00:14:12 underdark dhcpd: Wrote 0 new dynamic host decls to leases file.
Jun  5 00:14:12 underdark dhcpd: Wrote 0 leases to leases file.
...
Jun  5 00:14:12 underdark dhcpd: 
Jun  5 00:14:12 underdark dhcpd: No subnet declaration for virbr0 (192.168.122.1).
Jun  5 00:14:12 underdark dhcpd: ** Ignoring requests on virbr0.  If this is not what
Jun  5 00:14:12 underdark dhcpd:    you want, please write a subnet declaration
Jun  5 00:14:12 underdark dhcpd:    in your dhcpd.conf file for the network segment
Jun  5 00:14:12 underdark dhcpd:    to which interface virbr0 is attached. **
Jun  5 00:14:12 underdark dhcpd: 
Jun  5 00:14:12 underdark dhcpd: 
Jun  5 00:14:12 underdark dhcpd: No subnet declaration for eth1 (no IPv4 addresses).
Jun  5 00:14:12 underdark dhcpd: ** Ignoring requests on eth1.  If this is not what
Jun  5 00:14:12 underdark dhcpd:    you want, please write a subnet declaration
Jun  5 00:14:12 underdark dhcpd:    in your dhcpd.conf file for the network segment
Jun  5 00:14:12 underdark dhcpd:    to which interface eth1 is attached. **
Jun  5 00:14:12 underdark dhcpd: 
Jun  5 00:14:12 underdark dhcpd: 
Jun  5 00:14:12 underdark dhcpd: No subnet declaration for p9p1 (no IPv4 addresses).
Jun  5 00:14:12 underdark dhcpd: ** Ignoring requests on p9p1.  If this is not what
Jun  5 00:14:12 underdark dhcpd:    you want, please write a subnet declaration
Jun  5 00:14:12 underdark dhcpd:    in your dhcpd.conf file for the network segment
Jun  5 00:14:12 underdark dhcpd:    to which interface p9p1 is attached. **
Jun  5 00:14:12 underdark dhcpd: 
Jun  5 00:14:12 underdark dhcpd: 
Jun  5 00:14:12 underdark dhcpd: Not configured to listen on any interfaces!
Jun  5 00:14:12 underdark dhcpd: 
Jun  5 00:14:13 underdark dhcpd: This version of ISC DHCP is based on the release available
Jun  5 00:14:13 underdark dhcpd: on ftp.isc.org.  Features have been added and other changes
Jun  5 00:14:13 underdark dhcpd: have been made to the base software release in order to make
Jun  5 00:14:13 underdark dhcpd: it work better with this distribution.
Jun  5 00:14:13 underdark dhcpd: 
Jun  5 00:14:13 underdark dhcpd: Please report for this software via the Red Hat Bugzilla site:
Jun  5 00:14:13 underdark dhcpd:     http://bugzilla.redhat.com
Jun  5 00:14:13 underdark dhcpd: 
Jun  5 00:14:13 underdark dhcpd: exiting.
...
Jun  5 00:14:13 underdark systemd[1]: dhcpd.service: main process exited, code=exited, status=1
Jun  5 00:14:13 underdark systemd[1]: Unit dhcpd.service entered failed state.
...
Jun  5 00:14:15 underdark kernel: [   27.634581] r8169 0000:03:00.0: p9p1: link up
Jun  5 00:14:15 underdark kernel: [   27.635444] ADDRCONF(NETDEV_CHANGE): p9p1: link becomes ready
Jun  5 00:14:15 underdark NetworkManager[829]: <info> (p9p1): carrier now ON (device state 20)
Jun  5 00:14:15 underdark NetworkManager[829]: <info> (p9p1): device state change: unavailable -> disconnected (reason 'carrier-changed') [20 30 40]
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Auto-activating connection 'home'.
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) starting connection 'home'
Jun  5 00:14:15 underdark NetworkManager[829]: <info> (p9p1): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) Stage 1 of 5 (Device Prepare) scheduled...
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) Stage 1 of 5 (Device Prepare) started...
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) Stage 2 of 5 (Device Configure) scheduled...
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) Stage 1 of 5 (Device Prepare) complete.
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) Stage 2 of 5 (Device Configure) starting...
Jun  5 00:14:15 underdark NetworkManager[829]: <info> (p9p1): device state change: prepare -> config (reason 'none') [40 50 0]
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) Stage 2 of 5 (Device Configure) successful.
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) Stage 3 of 5 (IP Configure Start) scheduled.
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) Beginning IP6 addrconf.
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) Stage 3 of 5 (IP Configure Start) complete.
Jun  5 00:14:15 underdark NetworkManager[829]: <info> Activation (p9p1) Stage 5 of 5 (IPv4 Commit) started...
Jun  5 00:14:15 underdark avahi-daemon[796]: Joining mDNS multicast group on interface p9p1.IPv4 with address 192.168.23.6.
Jun  5 00:14:15 underdark avahi-daemon[796]: New relevant interface p9p1.IPv4 for mDNS.
Jun  5 00:14:15 underdark avahi-daemon[796]: Registering new address record for 192.168.23.6 on p9p1.IPv4.
------------
# grep 192.168.23.0 /etc/dhcp/dhcpd.conf 
subnet 192.168.23.0 netmask 255.255.255.0 {


as you can see, dhcpd starts too early and dies before interface is up

at least it must support IP_FREEBIND, but socket activation is also nice