- c-ares and getaddrinfo() for IPv6
- CVE-2015-0235
- hostent->h_addr_list[0] == NULL while status is ARES_SUCCESS
- Patch for fixing the slow DNS lookup issue
- select() returns 1, timeout hasn't expired, but all FD bits are zero
- support for event-based loops (or workaround for FD_SETSIZE limit)