1 // Copyright 2011 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
15 func cgoAddrInfoFlags() int {
16 // NOTE(rsc): In theory there are approximately balanced
17 // arguments for and against including AI_ADDRCONFIG
18 // in the flags (it includes IPv4 results only on IPv4 systems,
19 // and similarly for IPv6), but in practice setting it causes
20 // getaddrinfo to return the wrong canonical name on Linux.
21 // So definitely leave it out.
22 return syscall.AI_CANONNAME | syscall.AI_V4MAPPED | syscall.AI_ALL