DHCP on FreeBSD 8.2

[newuse at qip.ru]

Hi all,
I am getting the following errors during compilation on my FreeBSD 8.2 OS:  
/usr/include/net/if_arp.h:47: error: expected specifier-qualifier-list before 'u_short'
/usr/include/net/if_arp.h:88: error: field 'arp_pa' has incomplete type
/usr/include/net/if_arp.h:89: error: field 'arp_ha' has incomplete type
/usr/include/net/if_arp.h:115: error: expected specifier-qualifier-list before 'u_long'
gmake[4]: *** [dhcp.lo] Error 1
gmake[4]: Leaving directory `/tmp/freeradius-server/src/lib'
gmake[3]: *** [lib] Error 2
gmake[3]: Leaving directory `/tmp/freeradius-server/src'
gmake[2]: *** [all] Error 2
gmake[2]: Leaving directory `/tmp/freeradius-server/src'
gmake[1]: *** [src] Error 2
gmake[1]: Leaving directory `/tmp/freeradius-server'
gmake: *** [all] Error 2

It seems, that there are difference between FreeBSD and Linux arp header files :(
Do anyone have a pach? 

Could you help me?

--
Sorry for my English
Best regards,
NewUse.