Hello again! Here's a quick follow-up release due to a rather bad bug present in the previous one. Get it from https://c-ares.org/ c-ares version 1.18.1 This is an urgent bugfix release for a regression made in 1.18.0. Bug fixes: o ares_getaddrinfo() would return ai_addrlen of 16 for ipv6 adddresses rather than the sizeof(struct sockaddr_in6) -- / daniel.haxx.se