DHCP

dhcpd.conf

ddns-update-style interim;

allow booting;
allow bootp;

log-facility local7;
authoritative;

subnet 172.29.89.0 netmask 255.255.255.0 {
     option routers             172.29.89.5;
     option subnet-mask         255.255.255.0;
     default-lease-time         21600;
     max-lease-time             43200;
     next-server                172.29.89.161;
     filename "/pxelinux.0";
}

subnet 172.29.64.0 netmask 255.255.255.192 {
     option routers             172.29.64.5;
     option domain-name-servers 172.29.120.40;
     option subnet-mask         255.255.255.192;
     default-lease-time         21600;
     max-lease-time             43200;
     next-server                172.29.89.161;
     filename "/pxelinux.0";
}

group {
    host host1 {
        hardware ethernet aa:aa:aa:aa:aa:aa;
        fixed-address 172.29.64.26;
        option host-name "host1";
    }
}

error

Nov 11 16:55:57 dhcpd dhcpd[289]: DHCPDISCOVER from aa:aa:aa:aa:aa:aa via eth0: network 172.29.89.0/24: no free leases
Nov 11 16:56:20 dhcpd dhcpd[289]: DHCPDISCOVER from aa:aa:aa:aa:aa:aa via eth0: network 172.29.89.0/24: no free leases
Nov 11 16:56:23 dhcpd dhcpd[289]: DHCPDISCOVER from aa:aa:aa:aa:aa:aa via eth0: network 172.29.89.0/24: no free leases
Nov 11 16:56:26 dhcpd dhcpd[289]: DHCPDISCOVER from aa:aa:aa:aa:aa:aa via eth0: network 172.29.89.0/24: no free leases

interfaces

auto eth0
iface eth0 inet static
  address 172.29.89.161
  netmask 255.255.255.0
  gateway 172.29.89.5