WiFi + DHCP

[varchar]

Hello!
I have such situation:
LAN - DHCP-server (192.168.x.x/24)
wifi - DHCP-server (10.50.x.x/24)
In both ranges use static tables.
I set up box as open AP.
DHCP works on LAN iface, but doesn't on wifi iface (clients can't to get IP).

DHCP log:
dhcpd: DHCPRELEASE of 10.50.0.51 from 00:1d:d9:56:60:0a via ral0 (not found)
Apr 23 12:47:17 dhcpd: DHCPACK on 10.50.0.51 to 00:1d:d9:56:60:0a via ral0
Apr 23 12:47:17 dhcpd: DHCPREQUEST for 10.50.0.51 (10.50.0.1) from 00:1d:d9:56:60:0a via ral0
Apr 23 12:47:17 dhcpd: DHCPOFFER on 10.50.0.51 to 00:1d:d9:56:60:0a via ral0
Apr 23 12:47:17 dhcpd: DHCPDISCOVER from 00:1d:d9:56:60:0a via ral0

In first line is 'not found', but in DHCP settings is line 00:1d:d9:56:60:0a 10.50.0.51

Thanks.