#define DHCPST_IDLE 0
#define DHCPST_INIT 1
#define DHCPST_SELECTING 2
#define DHCPST_REQUESTING 3
#define DHCPST_REBOOTING 4
#define DHCPST_BOUND 5
#define DHCPST_RENEWING 6
#define DHCPST_REBINDING 7
#define DHCPST_INFORMING 8
#define DHCPST_RELEASING 9
#define DHCPERR_TIMEOUT 1
#define DHCPERR_NOMAC 2
#define DHCPERR_STATE 3
#define DHCPERR_BADDEV 17
#define DHCPERR_SYSTEM 18
#define DHCPERR_TRANSMIT 19
#define DHCPERR_RECEIVE 20