DHCP_MTU_MAX
#define DHCP_OPTION_LEN (DHCP_MTU_MAX - DHCP_FIXED_LEN)
#define DHCP_OPTION_LEN (DHCP_MTU_MAX - DHCP_FIXED_LEN)
maxlen = DHCP_MTU_MAX - DHCP_FIXED_LEN - DHCP_OPTIONS_COOKIE_LEN - 1;
maxlen = DHCP_MTU_MAX - DHCP_FIXED_LEN - DHCP_OPTIONS_COOKIE_LEN - 1;
&buflen, DHCP_MTU_MAX) == -1) {
&buflen, DHCP_MTU_MAX) == -1) {
#define DHCP_OPTION_LEN (DHCP_MTU_MAX - DHCP_FIXED_LEN)