IFNAMSIZ         1837 ext/socket/constdefs.h #  define IFNAMSIZ IFNAMSIZ
IFNAMSIZ          681 ext/socket/option.c #       define IFNAMSIZ (sizeof(unsigned int)*3+1)
IFNAMSIZ          228 include/ruby/win32.h #define IFNAMSIZ IF_NAMESIZE
IFNAMSIZ          230 include/ruby/win32.h #define IFNAMSIZ 256