<div>Thank you Rick for your input.</div>
<div>Here is what I found from Qt:</div>
<div>QHostAddress isn't enough to hold proper addresses, meaning IPv6 addresses require more information than a simple 128-bit <br>address. Link-local addresses in stream connections require the sin6_scope_id field of sockaddr_in6 to be set when connect call is used,
</div>
<div>
<div> </div></div>
<div>In some Linux distros, when using a link-local or site-local address for IPv6 connections, you must specify the scope ID. The scope ID for a link-local address is usually the same as the interface name (e.g., "eth0", "en1") or number (
e.g., "1", "2").</div>
<div><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://doc.trolltech.com/4.3/qhostaddress.html#scopeId" target="_blank">http://doc.trolltech.com/4.3/qhostaddress.html#scopeId</a></div>
<div> </div>
<div> </div>
<div>
<div><font face="Arial" color="#0000ff" size="2">[machine1 ~]$ netperf241 -6 -H fe80::209:3dff:fe00:8c6%eth0<br>TCP STREAM TEST from ::0 (::) port 0 AF_INET6 to fe80::209:3dff:fe00:8c6%eth0 (fe80::209:3dff:fe00:8c6) port 0 AF_INET6 : histogram : demo
<br>Recv Send Send <br>Socket Socket Message Elapsed <br>Size Size Size Time Throughput <br>bytes bytes bytes secs. 10^6bits/sec </font></div>
<div><font face="Arial" color="#0000ff" size="2"></font> </div>
<div><font face="Arial" color="#0000ff" size="2"> 87380 16384 16384 10.00 2498.64 <br></font><font face="Arial" size="2"></font></div>
<div><font face="Arial" color="#0000ff" size="2">[releng@svbu-qa-opteron-1 ~]$ </font></div></div>
<div> </div>
<div>Regards,</div>
<div>Ashenafi<br> </div>
<div><span class="gmail_quote">On 4/10/07, <b class="gmail_sendername">Rick Jones</b> <<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:rick.jones2@hp.com" target="_blank">rick.jones2@hp.com</a>> wrote:
</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><br>Adding to the "must be the OS" argument is this, where a link-scope IP<br>works under HP-UX 11iv2 (
11.23)<br><br># ifconfig lan0<br>lan0: flags=843<UP,BROADCAST,RUNNING,MULTICAST><br> inet <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://15.4.89.212/" target="_blank">15.4.89.212</a> netmask fffff800 broadcast
<a onclick="return top.js.OpenExtLink(window,event,this)" href="http://15.4.95.255/" target="_blank">15.4.95.255</a><br>lan0: flags=4800841<UP,RUNNING,MULTICAST,PRIVATE,ONLINK><br> inet6 fe80::230:6eff:fe4c:2778 prefix 10
<br># netserver -6<br>Starting netserver at port 12865<br>Starting netserver at hostname ::0 port 12865 and family AF_INET6 <br># netperf -6<br>TCP STREAM TEST from ::0 (::) port 0 AF_INET6 to ::1 (::1) port 0 AF_INET6<br>
Recv Send Send<br>Socket Socket Message Elapsed<br>Size Size Size Time Throughput<br>bytes bytes bytes secs. 10^6bits/sec <br><br>32768 32768 32768 10.01 7006.90<br># netperf -H ::1 -6
<br>TCP STREAM TEST from ::0 (::) port 0 AF_INET6 to ::1 (::1) port 0 AF_INET6<br>Recv Send Send<br>Socket Socket Message Elapsed<br>Size Size Size Time Throughput <br>bytes bytes bytes secs. 10^6bits/sec
<br><br>32768 32768 32768 10.01 6969.30<br># netperf -H fe80::230:6eff:fe4c:2778 -6<br>TCP STREAM TEST from ::0 (::) port 0 AF_INET6 to<br>fe80::230:6eff:fe4c:2778 (fe80::230:6eff:fe4c:2778) port 0 AF_INET6 <br>Recv Send Send
<br>Socket Socket Message Elapsed<br>Size Size Size Time Throughput<br>bytes bytes bytes secs. 10^6bits/sec<br><br>32768 32768 32768 10.00 7063.79<br># uname -a<br>HP-UX linger B.11.23 U ia64 4203217935 unlimited-user license
<br><br></blockquote></div><br>