"booting disallowed" in server log

[Matt Laoye]

I've noticed the following dhcp server logs that I don't understand: mac
address is registered through omapi, no blocking or anything like that, but
immediately after server ACK, if host does DHCPDISCOVER, it gets "booting
disallowed" from the server. We are running the latest dhcp server, no
failover.
mac address registered in dhcpd.leases:

host  hostname{
  dynamic;
  hardware ethernet 00:12:79:bb:8d:2b;
}

dhcp server log:
Apr  2 11:20:21 omni dhcpd: DHCPREQUEST for 10.10.11.136 (129.79.1.13) from
00:12:79:bb:8d:2b (BL-RH-APONIMAT) via 10.10.11.254
Apr  2 11:20:21 omni dhcpd: DHCPACK on 10.10.11.136 ends 2007/04/02:23:20:21
to 00:12:79:bb:8d:2b (BL-RH-APONIMAT) via 10.10.11.254
Apr  2 11:21:24 omni dhcpd: DHCPDISCOVER from 00:12:79:bb:8d:2b via
10.10.11.254: booting disallowed
Apr  2 11:21:28 omni dhcpd: DHCPDISCOVER from 00:12:79:bb:8d:2b via
10.10.11.254: booting disallowed
Apr  2 11:21:37 omni dhcpd: DHCPDISCOVER from 00:12:79:bb:8d:2b via
10.10.11.254: booting disallowed
Apr  2 11:21:52 omni dhcpd: DHCPDISCOVER from 00:12:79:bb:8d:2b via
10.10.11.254: booting disallowed
Apr  2 11:24:41 omni dhcpd: DHCPINFORM from 10.10.11.136 via 10.10.11.254
Apr  2 11:24:41 omni dhcpd: DHCPACK to 10.10.11.136 (00:12:79:bb:8d:2b) via
eth0
Apr  2 11:24:44 omni dhcpd: DHCPINFORM from 10.10.11.136 via 10.10.11.254
Apr  2 11:24:44 omni dhcpd: DHCPACK to 10.10.11.136 (00:12:79:bb:8d:2b) via
eth0
Apr  2 11:26:32 omni dhcpd: DHCPINFORM from 10.10.11.136 via 10.10.11.254
Apr  2 11:26:32 omni dhcpd: DHCPACK to 10.10.11.136 (00:12:79:bb:8d:2b) via
eth0
Apr  2 11:26:33 omni dhcpd: DHCPINFORM from 10.10.11.136 via 10.10.11.254
Apr  2 11:26:33 omni dhcpd: DHCPACK to 10.10.11.136 (00:12:79:bb:8d:2b) via
eth0
Apr  2 13:26:31 omni dhcpd: DHCPRELEASE of 10.10.11.136 from
00:12:79:bb:8d:2b (BL-RH-APONIMAT) via eth0 (found)
Apr  2 13:27:55 omni dhcpd: DHCPDISCOVER from 00:12:79:bb:8d:2b via
10.10.11.254
Apr  2 13:27:56 omni dhcpd: DHCPOFFER on 10.10.11.136 ends
2007/04/02:17:29:55 to 00:12:79:bb:8d:2b (BL-RH-APONIMAT) via 10.10.11.254
Apr  2 13:27:56 omni dhcpd: DHCPREQUEST for 10.10.11.136 (129.79.1.13) from
00:12:79:bb:8d:2b (BL-RH-APONIMAT) via 10.10.11.254
Apr  2 13:27:56 omni dhcpd: DHCPACK on 10.10.11.136 ends 2007/04/03:01:27:56
to 00:12:79:bb:8d:2b (BL-RH-APONIMAT) via 10.10.11.254
Apr  2 13:28:55 omni dhcpd: DHCPDISCOVER from 00:12:79:bb:8d:2b via
10.10.11.254: booting disallowed
Apr  2 13:28:59 omni dhcpd: DHCPDISCOVER from 00:12:79:bb:8d:2b via
10.10.11.254: booting disallowed
Apr  2 13:29:07 omni dhcpd: DHCPDISCOVER from 00:12:79:bb:8d:2b via
10.10.11.254: booting disallowed
Apr  2 13:29:23 omni dhcpd: DHCPDISCOVER from 00:12:79:bb:8d:2b via
10.10.11.254: booting disallowed
Apr  2 13:32:46 omni dhcpd: DHCPINFORM from 10.10.11.136 via 10.10.11.254
Apr  2 13:32:46 omni dhcpd: DHCPACK to 10.10.11.136 (00:12:79:bb:8d:2b) via
eth0
Apr  2 13:32:49 omni dhcpd: DHCPINFORM from 10.10.11.136 via 10.10.11.254
Apr  2 13:32:49 omni dhcpd: DHCPACK to 10.10.11.136 (00:12:79:bb:8d:2b) via
eth0


Any suggestions will be greatly appreciated.

Matt