IPV6_V6ONLY       421 native_client_sdk/src/libraries/third_party/newlib-extras/netinet6/in6.h #define IPV6_BINDV6ONLY		IPV6_V6ONLY
IPV6_V6ONLY        42 net/socket/socket_descriptor.cc     if (setsockopt(result, IPPROTO_IPV6, IPV6_V6ONLY,