diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/event/ServerSocket.cxx | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/event/ServerSocket.cxx b/src/event/ServerSocket.cxx index e1fbb34ff..781d29181 100644 --- a/src/event/ServerSocket.cxx +++ b/src/event/ServerSocket.cxx @@ -339,6 +339,7 @@ ServerSocket::AddPortIPv4(unsigned port) } #ifdef HAVE_IPV6 + inline void ServerSocket::AddPortIPv6(unsigned port) { @@ -349,6 +350,22 @@ ServerSocket::AddPortIPv6(unsigned port) AddAddress((const sockaddr &)sin, sizeof(sin)); } + +/** + * Is IPv6 supported by the kernel? + */ +gcc_pure +static bool +SupportsIPv6() +{ + int fd = socket(AF_INET6, SOCK_STREAM, 0); + if (fd < 0) + return false; + + close(fd); + return true; +} + #endif /* HAVE_IPV6 */ #endif /* HAVE_TCP */ @@ -363,7 +380,8 @@ ServerSocket::AddPort(unsigned port, Error &error) } #ifdef HAVE_IPV6 - AddPortIPv6(port); + if (SupportsIPv6()) + AddPortIPv6(port); #endif AddPortIPv4(port); |