ipv6? - Was: [ILUG] Good DNS in Ireland

[Jeroen Massar]

Daniel Shaw wrote:
> Caution: Thread Hijack ahead
> 
>>  (who of course has working IPv6 connectivity thus any delays there
>>   would not affect me ;)
>>
> 
> I've also got ipv6 connectivity through a tunnel broker (Sixxs). Can I
> ask if you have native ipv6 or a tunnel also and in either case through
> who/where. Just curious about the ipv6 options and the ease and
> performance out there at the moment.

I also use SixXS (for some strange reason ;) (*small hint* take a look
at http://www.sixxs.net/contact/ and compare names)

Check http://www.sixxs.net/tools/grh/dfp/all/?country=ie for a list of
ISP's who currently at least have their own allocation and have
something available in the DFP. I understood that both SMART and IMAGINE
are doing quite some good things in that area and are providing things
to their endusers. Eircomm have been doing (http://ipv6.eircom.net/).
HEANet of course can provide it about anywhere they want in different forms.

I don't have any in my native list yet though:
http://www.sixxs.net/faq/connectivity/?faq=native
(if you know any... yell! :)

> Also, if there's anyone from Heanet on the list, is accessing
> ftp.heanet.ie through ipv6 purposefully slower than ipv4.

Acts at the same speed here, but then again it dog slow with only 1mbit
over eircom.

On a different box (in .nl just in case you wonder) though:
%wget -6O /dev/null
ftp://ftp.heanet.ie:/pub/ubuntu-cdimage/vmware/Ubuntu-6.06.1-i386.
--23:30:49--
ftp://ftp.heanet.ie/pub/ubuntu-cdimage/vmware/Ubuntu-6.06.1-i386.zip
           => `/dev/null'
Resolving ftp.heanet.ie... 2001:770:18:aa40::c101:c140
Connecting to ftp.heanet.ie|2001:770:18:aa40::c101:c140|:21... connected.
Logging in as anonymous ... Logged in!
==> SYST ... done.    ==> PWD ... done.
==> TYPE I ... done.  ==> CWD /pub/ubuntu-cdimage/vmware ... done.
==> EPSV ... done.    ==> RETR Ubuntu-6.06.1-i386.zip ... done.
Length: 741,834,752 (707M) (unauthoritative)

 7% [==>                      ] 53,335,032     1.59M/s    ETA 07:02

Guess that is fast enough for a ftp site I hope ;)

IPv4 speed is the same, thus it must be a link issue between that box
and ftp.heanet.ie somewhere.

And just to prove the last point that IPv6 is not slow, nor is
ftp.heanet.ie which is blazingly fast, from a box a bit closer by:

$ wget -6O /dev/null
ftp://ftp.heanet.ie/pub/ubuntu-cdimage/vmware/Ubuntu-6.06.1-i386.zip
--22:33:22--
ftp://ftp.heanet.ie/pub/ubuntu-cdimage/vmware/Ubuntu-6.06.1-i386.zip
           => `/dev/null'
Resolving ftp.heanet.ie... 2001:770:18:aa40::c101:c140
Connecting to ftp.heanet.ie|2001:770:18:aa40::c101:c140|:21... connected.
Logging in as anonymous ... Logged in!
==> SYST ... done.    ==> PWD ... done.
==> TYPE I ... done.  ==> CWD /pub/ubuntu-cdimage/vmware ... done.
==> EPSV ... done.    ==> RETR Ubuntu-6.06.1-i386.zip ... done.
Length: 741,834,752 (707M) (unauthoritative)

100%[====================================>] 741,834,752   11.06M/s
ETA 00:00

22:34:27 (10.94 MB/s) - `/dev/null' saved [741834752]

woei ;) Too bad it is limited to 100mbit (hey dave!!!! ;)

> I've made my
> Ubuntu apt and my Gentoo emerge forced to ipv4, as the ipv6 maxs out at
> about 10% of what ipv4 gives. For a short while when I first got ipv6 up
> a few months ago that wasn't the case and ipv4 and v6 had similar speeds
> to heanet.ie mirrors.
> 
> On the subject of mirrors to choose: Are there any other NTL broadband
> users on the list?

Bingo, the three letter magic word, there is your problem: NTL

NTL at the moment has quite a crap peering with the rest of Ireland.
Tracerouting to the address you mailed from, which seems to be the last
address you logged into from too:

traceroute to 89.100.50.73 (89.100.50.73), 64 hops max, 40 byte packets
 1  blanch-sr1-vlan8.services.hea.net (193.1.31.77)  0 ms  0 ms  0 ms
 2  po1-ar1-cwt.hea.net (193.1.195.138)  1 ms  1 ms  1 ms
 3  gige4-3-cr1-cwt.hea.net (193.1.195.178)  1 ms  1 ms  1 ms
 4  so-3-0-0.ar1.dub1.gblx.net (208.48.23.53)  1 ms  1 ms  1 ms

so far so good still in Dublin ;)

on to London, UK:
 5  so0-0-0-2488M.ar3.LON2.gblx.net (67.17.71.25)  10 ms  10 ms  10 ms
 6  uk-lon01a-ri1-ge-1-0-0.aorta.net (195.66.224.89)  87 ms  87 ms  84 ms
 7  uk-lon01a-rd1-pos-1-0.aorta.net (213.46.174.161)  83 ms  85 ms  82 ms
 8  uk-lon01a-rd2-10ge-7-0.aorta.net (213.46.174.34)  81 ms  141 ms  76 ms

and... EEK Poland! what does that do there?
 9  pl-waw01a-rd1-pos-4-0-0.aorta.net (213.46.160.18)  90 ms  94 ms  97 ms
10  213.46.165.10.aorta.net (213.46.165.10)  97 ms  97 ms  96 ms
11  089-101-162010.ntlworld.ie (89.101.162.10)  97 ms  97 ms  99 ms
... (your box seems quite offline / firewalled)

Well I guess that 90ms extra roundtrip time explains a lot ;)

> If so, do you also seem to find that a traceroute to
> anywhere seems to go to Holland as the first hop outside of NTL's
> network and then through Great Britain back to anywhere else in Ireland
> (like heanet.ie, blacknight.ie, eircom.net, blueface.ie). Is there no
> decent peering point in Dublin? Or are all the Irish sites actually
> hosted in continental Europe and the UK? Should I be using Dutch mirrors
> for all my distro updates?

No NTL is at fault here, they don't peer at INEX.

At the moment, I guess that seems to be a sane thing to do.
Try using ftp.nluug.nl, which is fast over both v4 and v6.

Btw, NTL (as previously mentioned here or on SAGE-IE) will be joining
INEX somewhere starting next year and then all will be fine and dandy
again...

Greets,
 Jeroen

(If people are really getting annoyed by slow IPv6 over SixXS because of
NTL, I might be inclined to throw out some tunnels from one of the dutch
pops if that would help fix it It seems that from the gblon01 / Kewlio
PoP the connectivity is also quite reasonable:

traceroute to 89.100.50.73 (89.100.50.73), 64 hops max, 40 byte packets
 1  vl-2-goblin.sov.kewlio.net.uk (85.116.4.2)  1.197 ms  1.901 ms  1.155 ms
 2  gi0-0.712-sorcerer.sov.kewlio.net.uk (85.116.0.23)  1.255 ms  1.366
ms  0.852 ms
 3  fa0-0.712-necromancer.sov.kewlio.net.uk (85.116.0.21)  1.404 ms
2.234 ms  1.615 ms
 4  193.109.219.50 (193.109.219.50)  3.622 ms  2.917 ms  1.372 ms
 5  uk-lon01a-ri1-ge-1-0-0.aorta.net (195.66.224.89)  2.546 ms  1.158 ms
 2.258 ms
 6  uk-lon01a-rd1-pos-5-0.aorta.net (213.46.174.125)  2.129 ms  2.457 ms
 1.497 ms
 7  uk-lon01a-rd2-10ge-7-0.aorta.net (213.46.174.34)  6.966 ms  7.332 ms
 6.447 ms
 8  pl-waw01a-rd1-pos-4-0-0.aorta.net (213.46.160.18)  16.761 ms  16.712
ms  17.231 ms
 9  213.46.165.10.aorta.net (213.46.165.10)  17.547 ms  18.426 ms  17.609 ms
10  089-101-162010.ntlworld.ie (89.101.162.10)  22.133 ms  22.096 ms
20.997 ms

at least better than the 90ms up there. Strangely enough, this trace
also seems to go over the Polish/Warsaw box but it doesn't cost much
latency, oddness....