Hi, list I downloaded OpenSSL 1.0 beta3 and found a bug in the function BIO_get_accept_socket(), when dealing with an IPv6 address.
The line below copies the content of `res->ai_addr' to `server', but sizeof(server) = 16, while for IPv6 address, res->ai_addrlen is 28. i.e, sizeof(struct sockadr_in6). The missing 12 bytes will cause the later bind() always fail. struct sockaddr server,client; server = *res->ai_addr; To fix it, I use the type `struct sockaddr_storage' to hold the address information so that its storage can satisfy any type of socket address, for example: struct sockaddr_storage server,client; memcpy(&server, res->ai_addr, res->ai_addrlen); Pls see the patch in attachment for details. -- Thanks, Li Qun
fix-ipv6-handling.patch
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