DHCP - problem s DHCPNAK

Cau, mam problem s DHCP serverem. I kdyz je nastaven jako authoritativni, tak neposila DHCPNAK pro klienty, kteri maji rozsah jiny nez, ktery nabizi on. Vygooglovat se mi bohuzel nic moc nepodarilo - nema nekdo zkusenosti? Zvlastni je ze pro nejake stroje to funguje a pro nejake ne :-/.

Jedna se o ISC DHCP 3.0.2

Konfigurak dhcpd.conf

"
ddns-update-style none;
ddns-updates off;

authoritative;

option domain-name "XXX.XXX.cz";
option domain-name-servers XXX.XXX.XXX.2, XXX.XXX.XXX.2;
option routers XXX.XXX.XXX.1;

option ntp-servers XXX.XXX.XXX.XXX;
option log-servers XXX.XXX.XXX.XXX;

default-lease-time 3600;
max-lease-time 3600;

boot-unknown-clients false;
deny unknown-clients;

subnet XXX.XXX.XXX.0 netmask 255.255.254.0 {
  option subnet-mask 255.255.254.0;
  option broadcast-address XXX.XXX.XXX.255;

  host nejakyhost { hardware ethernet 00:01:xx:xx:xx:xx; fixed-address nejakyhost.xxxx.cz; }

... cca 500 hostu ...
}
"

ukazka logu pro nefunkcni DHCPNAK

"...
Nov 20 07:19:31 dns dhcpd: DHCPREQUEST for 192.168.2.120 from 00:c0:9f:xx:xx:xx via eth0: unknown lease 192.168.2.120.
Nov 20 07:19:36 dns dhcpd: DHCPREQUEST for 192.168.2.120 from 00:c0:9f:xx:xx:xx via eth0: unknown lease 192.168.2.120.
...
Nov 20 07:19:45 dns dhcpd: DHCPREQUEST for 192.168.2.120 from 00:c0:9f:xx:xx:xx via eth0: unknown lease 192.168.2.120.
...
Nov 20 07:22:39 dns dhcpd: DHCPDISCOVER from 00:c0:9f:xx:xx:xx via eth0
Nov 20 07:22:39 dns dhcpd: DHCPOFFER on XXX.XXX.6.52 to 00:c0:9f:xx:xx:xx via eth0
Nov 20 07:22:39 dns dhcpd: DHCPREQUEST for XXX.XXX.6.52 (XXX.XXX.6.2) from 00:c0:9f:xx:xx:xx via eth0
Nov 20 07:22:39 dns dhcpd: DHCPACK on XXX.XXX.6.52 to 00:c0:9f:xx:xx:xx via eth0
..."

ukazka logu pro funkcni DHCPNAK

"...
Nov 20 12:50:28 dns dhcpd: DHCPREQUEST for 192.168.2.101 from 00:00:e2:xx:xx:xx via eth0: wrong network.
Nov 20 12:50:28 dns dhcpd: DHCPNAK on 192.168.2.101 to 00:00:e2:xx:xx:xx via eth0
Nov 20 12:50:30 dns dhcpd: DHCPDISCOVER from 00:00:e2:xx:xx:xx via eth0
Nov 20 12:50:30 dns dhcpd: DHCPOFFER on XXX.XXX.6.90 to 00:00:e2:xx:xx:xx via eth0
Nov 20 12:50:30 dns dhcpd: DHCPREQUEST for XXX.XXX.6.90 (XXX.XXX.6.2) from 00:00:e2:xx:xx:xx via eth0
Nov 20 12:50:30 dns dhcpd: DHCPACK on XXX.XXX.6.90 to 00:00:e2:xx:xx:xx via eth0
Nov 20 12:50:40 dns dhcpd: DHCPREQUEST for XXX.XXX.6.90 from 00:00:e2:xx:xx:xx via eth0
Nov 20 12:50:40 dns dhcpd: DHCPACK on XXX.XXX.6.90 to 00:00:e2:xx:xx:xx via eth0
..."

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Dotaz: DHCP - problem s DHCPNAK

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