common: drop ipv6 autodetection only valid for linux

common/os_calls.c

@@ -463,7 +463,7 @@ g_tcp_socket(void)
     unsigned int option_len;
 #endif
 
-#if defined(XRDP_ENABLE_IPV6) && !defined(NO_ARPA_INET_H_IP6)
+#if defined(XRDP_ENABLE_IPV6)
     rv = (int)socket(AF_INET6, SOCK_STREAM, 0);
 #else
     rv = (int)socket(AF_INET, SOCK_STREAM, 0);
@@ -472,7 +472,7 @@ g_tcp_socket(void)
     {
         return -1;
     }
-#if defined(XRDP_ENABLE_IPV6) && !defined(NO_ARPA_INET_H_IP6)
+#if defined(XRDP_ENABLE_IPV6)
     option_len = sizeof(option_value);
     if (getsockopt(rv, IPPROTO_IPV6, IPV6_V6ONLY, (char*)&option_value,
                    &option_len) == 0)
@@ -711,7 +711,7 @@ g_tcp_close(int sck)
 
 /*****************************************************************************/
 /* returns error, zero is good */
-#if defined(XRDP_ENABLE_IPV6) && !defined(NO_ARPA_INET_H_IP6)
+#if defined(XRDP_ENABLE_IPV6)
 int APP_CC
 g_tcp_connect(int sck, const char *address, const char *port)
 {

configure.ac

@@ -111,11 +111,6 @@ then
   AC_DEFINE([XRDP_ENABLE_IPV6],1,[Enable IPv6])
 fi
 
-AC_CHECK_MEMBER([struct in6_addr.s6_addr],
-                [],
-                [AC_DEFINE(NO_ARPA_INET_H_IP6, 1, [for IPv6])],
-                [#include <arpa/inet.h>])
-
 if test "x$enable_pam" != "xyes" || test "x$bsd" = "xtrue"
 then
   AC_DEFINE([USE_NOPAM],1,[Disable PAM])