Sprint NOC? Are you awake now?

Tue Sep 2 19:53:50 UTC 2003

On Tue, 2 Sep 2003, Nenad Pudar wrote:

> OK
> The point is that ipv6 connection is not good enough to be used.

Wrong the v6 connection for your host isn't good enough to use. It works 
fine from here...

> And for the sites that have the same dns for ipv4 and ipv6 ipv6 in a way 
> "blackhole" ipv4 connection.

that's a routing issue for you, not a problem with the dns.

> In this case puck.nether.net is timinig out from time to time (going 
> over ipv6) instead of going over ipv4 network.

So really what you want is for you dns resolver to understand the 
qualitiative differwences between the v6 and v4 paths to the same host, 
that's seems somewhat unreasonable to expect from the dns.

> Joel Jaeggli wrote:
> 
> >On Tue, 2 Sep 2003, Nenad Pudar wrote:
> >
> >  
> >
> >>Jared
> >>
> >>Ido not understand what you consider as problem here (the problem is not 
> >>the latency which is more or less normal thing for ipv6 at this time)
> >>"The problem" also showing on you box is that dns6 is resolved first
> >>forcing the connection to be ipv6 which is not something that we really 
> >>want at this stage.
> >>    
> >>
> >
> >really, why not? I don't know anyone who wants to use v6 only if v4 
> >connection attemts fail.
> >
> >  
> >
> >>That is why my point is that at this stage people should not have the 
> >>same dns for ipv4 and ipv6 site.
> >>
> >>Does any body know what is needed in config (resolver library) in order 
> >>to force the client to look first in dns 4 and not dns6 ?
> >>
> >>
> >>thanks
> >>
> >>nenad
> >>
> >>
> >>
> >>
> >>Jared Mauch wrote:
> >>
> >>    
> >>
> >>>On Tue, Sep 02, 2003 at 11:32:34AM -0400, Nenad Pudar wrote:
> >>> 
> >>>
> >>>      
> >>>
> >>>>Jared
> >>>>
> >>>>The "problem " with your site is that it has the same dns for ipv4 and ipv6
> >>>>In may case on dual-stack unix (sun) box dns6 is always resolved first 
> >>>>(properly) and then sometimes because of the latency (ipv6) it times out.
> >>>>On the other hand that prevents me from going through ipv4 connection 
> >>>>which is good
> >>>>   
> >>>>
> >>>>        
> >>>>
> >>>	Sounds like a sun related issue, I'm seeing no problem with my
> >>>other IPv6 enabled hosts.
> >>>
> >>>	eg:
> >>>
> >>>;; Total query time: 166 msec
> >>>;; FROM: punk.nether.net to SERVER: puck  2001:418:3f4:0:2a0:24ff:fe83:53d8
> >>>;; WHEN: Tue Sep  2 11:37:44 2003
> >>>;; MSG SIZE  sent: 17  rcvd: 509
> >>>
> >>>
> >>> 
> >>>
> >>>      
> >>>
> >>>># getent ipnodes puck.nether.net
> >>>>2001:418:3f4:0:2a0:24ff:fe83:53d8 puck.nether.net
> >>>>204.42.254.5 puck.nether.net
> >>>># traceroute puck.nether.net
> >>>>traceroute: Warning: Multiple interfaces found; using :: @ ?
> >>>>traceroute to puck.nether.net (2001:418:3f4:0:2a0:24ff:fe83:53d8), 30 
> >>>>hops max, 60 byte packets
> >>>>1 2001:5a0:5000:1:: 2.078 ms 1.316 ms 1.149 ms
> >>>>2 2001:5a0:8::1 1.648 ms 1.539 ms 1.351 ms
> >>>>3 viagenie.tu-3.r00.snjsca06.us.b6.verio.net (2001:418:0:4000::26) 
> >>>>34.631 ms 34.674 ms 34.540 ms
> >>>>4 tu-3.r00.snjsca06.us.b6.verio.net (2001:418:0:4000::25) 122.123 ms * 
> >>>>122.248 ms
> >>>>5 tu-840.r00.asbnva01.us.b6.verio.net (2001:418:0:2000::22) 184.074 ms 
> >>>>184.211 ms 184.405 ms
> >>>>6 t2914.nnn-7202.nether.net (2001:418:0:5000::15) 261.417 ms 245.284 ms 
> >>>>233.555 ms
> >>>>7 2001:418:3f4:0:2a0:24ff:fe83:53d8 224.388 ms 225.100 ms 226.350 ms
> >>>>#
> >>>>
> >>>>I think everybody should think about using the same dns for ipv4 and ipv6
> >>>>   
> >>>>
> >>>>        
> >>>>
> >>>phat:~> getent ipnodes puck.nether.net.
> >>>2001:418:3f4:0:2a0:24ff:fe83:53d8       puck.nether.net
> >>>204.42.254.5    puck.nether.net
> >>>phat:~> traceroute puck.nether.net
> >>>traceroute: Warning: Multiple interfaces found; using 3ffe:a00:f:4::2 @ le0:1
> >>>traceroute to puck.nether.net (2001:418:3f4:0:2a0:24ff:fe83:53d8), 30 hops max, 60 byte packets
> >>>1  rtr2-eth1-1.blackrose.org (3ffe:a00:f:4::1)  1.433 ms  1.509 ms  1.318 ms
> >>>2  nnn-3640-tu2 (3ffe:a00:f:1::9)  84.991 ms  24.209 ms  12.557 ms
> >>>3  2001:418:3f4:0:2a0:24ff:fe83:53d8  12.423 ms  15.002 ms  46.298 ms
> >>>
> >>> 
> >>>
> >>>      
> >>>
> >>>>nenad
> >>>>
> >>>>Jared Mauch wrote:
> >>>>
> >>>>   
> >>>>
> >>>>        
> >>>>
> >>>>>On Fri, Aug 29, 2003 at 05:14:49AM -0500, neal rauhauser wrote:
> >>>>>
> >>>>>
> >>>>>     
> >>>>>
> >>>>>          
> >>>>>
> >>>>>>I didn't know their NOC number, puck.nether.net is down, normal phone
> >>>>>> 
> >>>>>>
> >>>>>>       
> >>>>>>
> >>>>>>            
> >>>>>>
> >>>>>	Uh, puck is fine.
> >>>>>
> >>>>>http://puck.nether.net/netops/nocs.cgi?ispname=sprint
> >>>>>
> >>>>>
> >>>>>
> >>>>>     
> >>>>>
> >>>>>          
> >>>>>
> >>>>>>channels lead to voicemail jail. Sorry to disturb your morning but its
> >>>>>>much easier to complete by 0600 than to have five counties worth of
> >>>>>>users dialing a phone right next to where you're working.
> >>>>>> 
> >>>>>>
> >>>>>>       
> >>>>>>
> >>>>>>            
> >>>>>>
> >>>>>	- Jared
> >>>>>
> >>>>>
> >>>>>
> >>>>>     
> >>>>>
> >>>>>          
> >>>>>
> >>>>-- 
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>Nenad Pudar
> >>>>IP Network Engineer
> >>>>TELEGLOBE
> >>>>phone: 1 514 868 8053
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>   
> >>>>
> >>>>        
> >>>>
> >>> 
> >>>
> >>>      
> >>>
> >>    
> >>
> >
> >  
> >
> 
> 

-- 
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Joel Jaeggli  	       Unix Consulting 	       joelja at darkwing.uoregon.edu    
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