AI_V4MAPPED        55 ext/socket/addrinfo.h #undef AI_V4MAPPED
AI_V4MAPPED       109 ext/socket/addrinfo.h #define	AI_V4MAPPED	0x00000800 /* accept IPv4-mapped IPv6 address */
AI_V4MAPPED      1622 ext/socket/constdefs.h #  define AI_V4MAPPED AI_V4MAPPED