VS_OPTION_END
optnum.code <= VS_OPTION_END)
DHCP_OPT *vs[VS_OPTION_END - VS_OPTION_START + 1];
if (code > VS_OPTION_END)
field_scan(start, end, pl->vs, VS_OPTION_END);
bzero(pl->vs, (VS_OPTION_END - VS_OPTION_START + 1) *