Request: Please hook up IPv6 to cvsup mirrors

[Doug Barton]

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Howdy,

I'm a big proponent of using IPv6 to do as much as humanly possible
for a lot of reasons, which I don't think I need to list unless you
really want me to. :)  My understanding is that cVsup does not have
the ability to use IPv6 transport natively, however the csup binary in
the base does, and more and more users are migrating to it as time
goes on.

I've also noticed that the cvsup mirrors that I use most often all
have IPv6 addresses associated with them. I see this on startup:

Connecting to cvsup10.freebsd.org
Cannot connect to 2001:4f8:fff6::30: Connection refused
Connected to 69.147.83.48

Now here comes the request. My understanding is that there is a fairly
simple netcat trick to link the cvsup port on the IPv6 address to that
of the IPv4 address. If that actually is possible, I'd like to request
that y'all actually do that. :)

I will of course be glad to assist with this in any necessary manner.


Doug

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[Peter Losher-4]

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Doug Barton wrote:

> Now here comes the request. My understanding is that there is a fairly
> simple netcat trick to link the cvsup port on the IPv6 address to that
> of the IPv4 address. If that actually is possible, I'd like to request
> that y'all actually do that. :)

FWIW, cvsup4{.us}.freebsd.org already does this...

- -Peter
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[Oliver Fromme]

Doug Barton wrote:
 > Now here comes the request. My understanding is that there is a fairly
 > simple netcat trick to link the cvsup port on the IPv6 address to that
 > of the IPv4 address. If that actually is possible, I'd like to request
 > that y'all actually do that. :)

You can also use the 6tunnel tool (ports/net/6tunnel),
which is fairly easy to use:

# 6tunnel -6 5999 127.0.0.1 5999

If everything else fails, you can even use FreeBSD's
base ssh(1) to create v6-to-v4 tunnels, provided that
the encryption overhead is no problem for you (or use
a patched openssh that supports "-c none"):

# ssh -gNR '[your_v6_address]/5999/127.0.0.1/5999' 127.0.0.1

(You also need to enable the GatewayPorts option in
your sshd_config(5) file, then restart sshd(8).)

Best regards
   Oliver

--
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Handelsregister: Registergericht Muenchen, HRA 74606,  Geschäftsfuehrung:
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[Mohacsi Janos]

On Mon, 24 Aug 2009, Doug Barton wrote:

> I've also noticed that the cvsup mirrors that I use most often all
> have IPv6 addresses associated with them. I see this on startup:
>
> Connecting to cvsup10.freebsd.org
> Cannot connect to 2001:4f8:fff6::30: Connection refused
> Connected to 69.147.83.48
>

cvsup.hu.freebsd.org handling both IPv6 and IPv4  - IPv6 with netcat
trick.

Best Regards,
  Janos Mohacsi
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[Doug Barton]

Mohacsi Janos wrote:

>
>
>
> On Mon, 24 Aug 2009, Doug Barton wrote:
>
>> I've also noticed that the cvsup mirrors that I use most often all
>> have IPv6 addresses associated with them. I see this on startup:
>>
>> Connecting to cvsup10.freebsd.org
>> Cannot connect to 2001:4f8:fff6::30: Connection refused
>> Connected to 69.147.83.48
>>
>
> cvsup.hu.freebsd.org handling both IPv6 and IPv4  - IPv6 with netcat trick.

Thanks to you and Oliver for the responses. Re cvsup.hu I would prefer
to try and be a good netizen and keep my packets on this side of the
Atlantic. :)  I use cvsup4.us (ISC) and cvsup10.us (Yahoo!) the most,
with the latter as the default since cvsup4 is so often at capacity.


Doug

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[Laurent Frigault-2]

On Mon, Aug 24, 2009 at 03:31:19PM -0700, Doug Barton wrote:

> Now here comes the request. My understanding is that there is a fairly
> simple netcat trick to link the cvsup port on the IPv6 address to that
> of the IPv4 address. If that actually is possible, I'd like to request
> that y'all actually do that. :)

cvsup1.fr.freebsd.org (aka cvsup.free.org) handling both IPv6 and IPv4
- IPv6 with netcat trick.

www1.fr.freebsd.org is also handling both IPv6 and IPv4.

Regards,
--
Laurent Frigault | Free.org
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[Doug Barton]

Laurent Frigault wrote:
> On Mon, Aug 24, 2009 at 03:31:19PM -0700, Doug Barton wrote:
>
>> Now here comes the request. My understanding is that there is a fairly
>> simple netcat trick to link the cvsup port on the IPv6 address to that
>> of the IPv4 address. If that actually is possible, I'd like to request
>> that y'all actually do that. :)
>
> cvsup1.fr.freebsd.org (aka cvsup.free.org) handling both IPv6 and IPv4
> - IPv6 with netcat trick.

Thanks, I've made a note of that for future reference. :)  I am trying
to avoid sending my packets all the way across the Atlantic and back,
although I have an excellent route between California and that server.


Doug

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[Brian A. Seklecki (Mobile)]

> I'm a big proponent of using IPv6 to do as much as humanly possible
> for

All:

Thanks for bringing up this topic.  I added some notes on how to use the
net/netcat6 method to:

http://wiki.netbsd.se/Mirroring_NetBSD#Adding_IPv6_Support_to_cvsupd.288.29

This document actually has a lot of FreeBSD mirroring notes, too.

Another method not discussed was faith(8) -- it's a great way to map
your v4 endpoints into v6 addresses; especially if you've got a lot of
legacy v4-gear that has no v6-migration path, like layer4 application
switches & load-balancers.

~BAS

[Simon L. Nielsen]

On 2009.08.24 15:31:19 -0700, Doug Barton wrote:

> I've also noticed that the cvsup mirrors that I use most often all
> have IPv6 addresses associated with them. I see this on startup:
>
> Connecting to cvsup10.freebsd.org
> Cannot connect to 2001:4f8:fff6::30: Connection refused
> Connected to 69.147.83.48

He, that's actually ncvsup.FreeBSD.org.  I suspect that just got an
IPv6 adress with the rest of the Y! FreeBSD.org systems and nobody
remembered to to hack up netcat :-).  We do use netcat on
cvsup-master.freebsd.org so it's a simple copy/paste fix.

I will try to remember to fix that over the weekend.  When I forget,
feel free to poke me.

--
Simon L. Nielsen
Hat: clusteradm
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[Doug Barton]

Simon L. Nielsen wrote:

> On 2009.08.24 15:31:19 -0700, Doug Barton wrote:
>
>> I've also noticed that the cvsup mirrors that I use most often all
>> have IPv6 addresses associated with them. I see this on startup:
>>
>> Connecting to cvsup10.freebsd.org
>> Cannot connect to 2001:4f8:fff6::30: Connection refused
>> Connected to 69.147.83.48
>
> He, that's actually ncvsup.FreeBSD.org.  I suspect that just got an
> IPv6 adress with the rest of the Y! FreeBSD.org systems and nobody
> remembered to to hack up netcat :-).  We do use netcat on
> cvsup-master.freebsd.org so it's a simple copy/paste fix.
>
> I will try to remember to fix that over the weekend.  When I forget,
> feel free to poke me.

Ok, if you can shoot me a note when you do it I will be sure to look
for it at my next update.


Thanks!

Doug

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[Simon L. Nielsen]

On 2009.10.02 11:40:59 -0700, Doug Barton wrote:

> Simon L. Nielsen wrote:
> > On 2009.08.24 15:31:19 -0700, Doug Barton wrote:
> >
> >> I've also noticed that the cvsup mirrors that I use most often all
> >> have IPv6 addresses associated with them. I see this on startup:
> >>
> >> Connecting to cvsup10.freebsd.org
> >> Cannot connect to 2001:4f8:fff6::30: Connection refused
> >> Connected to 69.147.83.48
> >
> > He, that's actually ncvsup.FreeBSD.org.  I suspect that just got an
> > IPv6 adress with the rest of the Y! FreeBSD.org systems and nobody
> > remembered to to hack up netcat :-).  We do use netcat on
> > cvsup-master.freebsd.org so it's a simple copy/paste fix.
> >
> > I will try to remember to fix that over the weekend.  When I forget,
> > feel free to poke me.
>
> Ok, if you can shoot me a note when you do it I will be sure to look
> for it at my next update.

Oh, and yes I did forget :-).

It should be working now (currently allowing 5 IPv6 cvsupd connections
at a time).

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[Doug Barton]

Simon L. Nielsen wrote:
> It should be working now (currently allowing 5 IPv6 cvsupd connections
> at a time).

Voila!

Connecting to cvsup10.freebsd.org
Connected to 2001:4f8:fff6::30

Thanks for following up on this, nice to have that much more traffic
going over v6. :)


Doug

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[Mark Huizer-3]

> Connecting to cvsup10.freebsd.org
> Connected to 2001:4f8:fff6::30
>
> Thanks for following up on this, nice to have that much more traffic
> going over v6. :)

cvsup.nl.freebsd.org has had this for quite some time now (using inetd),
but I never got to putting it in DNS, hopefully that will be fixed
soonish

Mark

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[Josef Grosch-4]

Mark Huizer wrote:

>> Connecting to cvsup10.freebsd.org
>> Connected to 2001:4f8:fff6::30
>>
>> Thanks for following up on this, nice to have that much more traffic
>> going over v6. :)
>
> cvsup.nl.freebsd.org has had this for quite some time now (using inetd),
> but I never got to putting it in DNS, hopefully that will be fixed
> soonish
>
> Mark
>

We here at LBL are working on putting up an official FreeBSD mirror
offering IPv4 and IPv6.



Josef

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[Garrett Wollman-6]

<<On Wed, 18 Nov 2009 10:51:05 -0800, Josef Grosch <jgrosch@...> said:

> We here at LBL are working on putting up an official FreeBSD mirror
> offering IPv4 and IPv6.

I've been ready to offer it for the past five years, but my upstream
still doesn't support v6.  (When you have a /8, the motivation to
actually prepare for the transition is somewhat attenuated....)

-GAWollman

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