$NetBSD: patch-am,v 1.1.1.1 2004/02/29 17:45:02 xtraeme Exp $

--- nsprpub/pr/src/pthreads/ptio.c.orig	2004-02-27 14:40:00.000000000 +0900
+++ nsprpub/pr/src/pthreads/ptio.c	2004-02-27 14:43:11.000000000 +0900
@@ -192,7 +192,7 @@
 #endif
 #endif
 
-#ifdef DARWIN
+#if defined(DARWIN) || (defined(__NetBSD__) && defined(IPV6_V6ONLY))
 static PRBool _pr_ipv6_v6only_on_by_default;
 /* The IPV6_V6ONLY socket option is not defined on Mac OS X 10.1. */
 #ifndef IPV6_V6ONLY
@@ -205,7 +205,7 @@
 #elif defined(IRIX) || defined(OSF1) || defined(AIX) || defined(HPUX) \
     || defined(LINUX) || defined(FREEBSD) || defined(BSDI) || defined(VMS) \
     || defined(NTO) || defined(OPENBSD) || defined(DARWIN) \
-    || defined(UNIXWARE)
+    || defined(UNIXWARE) || defined(NETBSD)
 #define _PRSockOptVal_t void *
 #else
 #error "Cannot determine architecture"
@@ -1157,7 +1157,7 @@
     _pr_stderr = pt_SetMethods(2, PR_DESC_FILE, PR_FALSE, PR_TRUE);
     PR_ASSERT(_pr_stdin && _pr_stdout && _pr_stderr);
 
-#ifdef DARWIN
+#if defined(DARWIN) || (defined(__NetBSD__) && defined(IPV6_V6ONLY))
     /* In Mac OS X v10.3 Panther Beta the IPV6_V6ONLY socket option
      * is turned on by default, contrary to what RFC 3493, Section
      * 5.3 says.  So we have to turn it off.  Find out whether we
@@ -3477,7 +3477,7 @@
     if (osfd == -1) pt_MapError(_PR_MD_MAP_SOCKET_ERROR, errno);
     else
     {
-#ifdef DARWIN
+#if defined(DARWIN) || (defined(__NetBSD__) && defined(IPV6_V6ONLY))
         if ((domain == AF_INET6) && _pr_ipv6_v6only_on_by_default)
         {
             int on = 0;