<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=utf-8" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 8.00.6001.18702"> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT size=2 face=Arial>ok, sorry...</FONT></DIV><FONT size=2 face=Arial> <DIV> </DIV> <DIV>(tcp-connect   hostname         <BR>    port-no         <BR>   [local-hostname         <BR>    local-port-no])   →   input-port?   output-port? <BR> <BR></DIV> <DIV> </DIV> <DIV>If hostname already resolves to an IPv6 address, you are done - to test (locally):</DIV> <DIV> </DIV> <DIV>In /etc/hosts, add something like</DIV> <DIV> </DIV> <DIV>127.0.0.1     localhostipv4</DIV> <DIV>::1               localhostipv6</DIV> <DIV> </DIV> <DIV>then open a connection to localhostipv6. That'll get you via an IPv6 interface - which one I don't know since there is no scope Id you can specify in the call to connect!</DIV> <DIV> </DIV> <DIV>Another way is to set local-hostname to localhostipv6, but then you can not leave local-port-no unspecified (I don't have any idea why that is so; I don't see any reason prescribed by IPv6 for it) which has ugly side effects (such as the one that you can't reopen the connection with the same local port unless TCP has nuked the old one completly which may take a while; also, there is not really a way to figure out if a port you select is in use or not).</DIV> <DIV> </DIV> <DIV>For test purposes it works, but it appears that there is work left to be done...</DIV> <DIV> </DIV> <DIV> </DIV></FONT> <BLOCKQUOTE style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B> <A title=grettke@acm.org href="mailto:grettke@acm.org">Grant Rettke</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=rac@ruediger-asche.de href="mailto:rac@ruediger-asche.de">Rüdiger Asche</A> </DIV> <DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=users@racket-lang.org href="mailto:users@racket-lang.org">users@racket-lang.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, May 06, 2012 5:42 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [racket] tcp-connect and IPv6...</DIV> <DIV><BR></DIV>What was the answer?<BR><BR> <DIV class=gmail_quote>On Sun, May 6, 2012 at 3:45 AM, Rüdiger Asche <SPAN dir=ltr><<A href="mailto:rac@ruediger-asche.de" target=_blank>rac@ruediger-asche.de</A>></SPAN> wrote:<BR> <BLOCKQUOTE style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class=gmail_quote>well I could have answered that myself (I did, eventually)... sorry for the noise...<BR>----- Original Message ----- From: "Rüdiger Asche" <<A href="mailto:rac@ruediger-asche.de" target=_blank>rac@ruediger-asche.de</A>><BR>To: <<A href="mailto:users@racket-lang.org" target=_blank>users@racket-lang.org</A>><BR>Sent: Friday, May 04, 2012 3:10 PM<BR>Subject: [racket] tcp-connect and IPv6... <DIV class=HOEnZb> <DIV class=h5><BR><BR><BR> <BLOCKQUOTE style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class=gmail_quote>Hi there,<BR><BR>is there a way on Racket to force an outgoing TCP connection (tcp-coonect) to go through an IPv6 interface on a multihomed machine?<BR><BR>Thanks!<BR><BR><BR>____________________<BR> Racket Users list:<BR> <A href="http://lists.racket-lang.org/users" target=_blank>http://lists.racket-lang.org/<U></U>users</A><BR><BR></BLOCKQUOTE><BR>____________________<BR> Racket Users list:<BR> <A href="http://lists.racket-lang.org/users" target=_blank>http://lists.racket-lang.org/<U></U>users</A><BR></DIV></DIV></BLOCKQUOTE></DIV><BR><BR clear=all> <DIV><BR></DIV>-- <BR><A href="http://www.wisdomandwonder.com/" target=_blank>http://www.wisdomandwonder.com/</A><BR>ACM, AMA, COG, IEEE<BR></BLOCKQUOTE></BODY></HTML>