** Changed in: glibc (Fedora)
Status: Fix Released => Invalid
** Changed in: glibc (Fedora)
Importance: Unknown => High
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Title:
IPV6
Disabling IPv6 using GRUB_CMDLINE_LINUX=ipv6.disable=1 works in Lucid
as I wrote in previous post, but it would be nice if it could work
properly without disabling - since it seems we will need IPv6 in the
near future:).
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In Ubuntu 10.04 I had problem with slow loading of web pages on three different
machines (all clean install) until I disabled IPv6 in /etc/default/grub by
adding this line:
GRUB_CMDLINE_LINUX=ipv6.disable=1
and than updating GRUB: sudo update-grub
In case there is some fix available also for
On 08/08/2010 03:17 PM, Lamer wrote:
In Ubuntu 10.04 I had problem with slow loading of web pages on three
different machines (all clean install) until I disabled IPv6 in
/etc/default/grub by adding this line:
GRUB_CMDLINE_LINUX=ipv6.disable=1
and than updating GRUB: sudo update-grub
In
Well, I wrote how to disable ipv6 completely in your system if you
really don't need it. It's safe to go.
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Sorry I ment dissabeling ipv6..
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It shouldn't be the case, dude.
Anyway, you may:
1) pass the 'ipv6.disable=1' kernel parameter (in your menu.lst)
2) configure your net manually, deleting all 'ipv6' strings (in
/etc/network/interfaces or in /etc/resolv.conf). I don't remember exactly.
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experiencing slow internet on Karmic 64 bit wired.
After enabling ipv6 in firefox it is fast again, but main things like updating
remains slow.
As far as I know was Jaunty working like it schould.
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no, I'm using Open DNS (208.67.222.222/220.220) on my jaunty box and I
get NO resolving, unless I point my browser or pidgin to the IP address
directly. Also disabling ipv6 in firefox works. This problem is new
and I have been using jaunty for a while now. Also my netbook with UNR
(jaunty)
Does using opendns (208.67.222.222) as nameserver solve the slow
internet access issue ?
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I'm sorry to say that all of you have gone too far in the debris of protocols
putting aside the possible workaround...
I'm from Ukraine and I confirm that connection became slow with this new 9.04
release.
As 'sojourner' already told there was an excellent fix for that in the past
(blacklisting
What about compiling kernel with IPv6 support compiled as a module and
then blacklist it? This should work, shouldn't it?
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** Changed in: glibc (Fedora)
Status: In Progress = Fix Released
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I've listed a new bug report for a bug I was experiencing that I thought
*might* have been related to this one.
If anyone is interested in commenting or relating please see here:
https://bugs.launchpad.net/ubuntu/+bug/337488
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IPV6 causes slow internet access
Thanks. What seems to be happening now is that your system does a
perfectly ordinary IPv4 A record query for bugs.launchpad.net to
192.168.2.1 (the first nameserver in /etc/resolv.conf, which I'm
guessing is your router), gets no reply for five seconds, and then
retries successfully to
Colin,
I think you were right that I didn't have a bug at all. I actually posted
to ubuntuforums and then figured it out on my own.
http://ubuntuforums.org/showthread.php?p=6798431
It was an ACPI problem. Thanks for your input though. Take care.
Jason
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Thankyou for all your efforts in resolving this . I do have a few
observations though , this did not occur with any earlier version of
Ubuntu or with jaunty prior to kernel 2.6.28-4 where ipv6 was built in
to the kernel , as long as I disabled ipv6 in /etc/modprobe.d/alieses
and blacklisted ipv6 .
Jason, as I noted in a previous comment:
I would GREATLY appreciate it if anyone else who believes that they
have a similar problem would please file a separate bug; this one has
already got very confusing.
At this point I'm afraid I am going to disregard all reports in comments
in this bug that
sojourner: Thanks for the data. However, it's unsurprising that you
would be unable to use ipv6.google.com, given that you do not have IPv6
connectivity (according to your ifconfig output); so this is not a very
good test.
Could you please try the following two URLs instead:
I wentahead and did strace on both those url's here they are .
** Attachment added: w3m.tracegoogle
http://launchpadlibrarian.net/23270249/w3m.tracegoogle
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and the other , actualy both of those loaded quickly .
** Attachment added: w3m.traceietf
http://launchpadlibrarian.net/23270289/w3m.traceietf
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Thanks for those. Hmm. Indeed, neither of those shows any sign of a
problem at all.
Maybe I should have phrased my question differently. Can you give me an
example of a URL other than ipv6.google.com (i.e. a URL that isn't
expected to be IPv6-only) with which you're experiencing a problem, or
here is a trace to LP which shows a little delay but overall things seem
to be loading faster today , maybe all of the other updates that have
come with alpha 5 had some effect ?
** Attachment added: w3m.tracelp
http://launchpadlibrarian.net/23278227/w3m.tracelp
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IPV6 causes slow internet
I am also having what I am guessing is this problem.
It happened around the time of Jaunty Alpha 5's release as my Internet was
unaffected earlier.
The disconnect is between my computer and my router, which can be verified by
transfers on the LAN and WAN being interrupted. Firefox and all other
sojourner: Could you repeat the previous strace command, but this time
add the -tt option to strace to produce timestamps? Sorry I didn't ask
for this earlier. Could you also please confirm that your ifconfig
output is the same as before (I'm specifically interested in the inet6
addr: lines)?
I'm
here is the strace and ifconfig , at the top of the copy of ifconfig is
the cmd line I used to run strace , note that the response is can't the
url .
** Attachment added: ifconfig2
http://launchpadlibrarian.net/23205889/ifconfig2
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nuts it only attached 1 file , here is the strace .
** Attachment added: w3m.trace2
http://launchpadlibrarian.net/23205934/w3m.trace2
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@Jason Waters:
This bug is for Jaunty.
You probably do not have a bug at all. For more information, please post
in the ubuntuforums, or log into #ubuntu and give a detailed explanation
of your problem.
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I'm wondering if I'm having a similar issue. I'm having slow internet
access when I set a static IP. If I use DHCP it works great. I have
this Ubuntu 8.04 Server directly connected to a comcast router. It has
5 static IPs. I use these all the time so I just set the static ip in
This bug was fixed in the package glibc - 2.9-0ubuntu12
---
glibc (2.9-0ubuntu12) jaunty; urgency=low
* debian/patches/all/fedora-nss_dns-gethostbyname4-disable.diff: Patch
from Fedora 2.9-3 to temporarily disable _nss_dns_gethostbyname4_r,
which caused problems for systems
I have updated to libc6 2.9-0ubuntu12 from the repos , while this may
give some small improvement (too small to be sure) it has not fixed my
problem , which as I noted is with my router , not my ISP . at least NM
now allows me to switch between eth0 (the problem router) and wlan0
through a
I can confirm that the libc in cjwatson's PPA doesn't regress on a
natively connected IPv6 host.
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I can confirm that the libc in cjwatson's PPA fixes the problem I was having on
my network where Intrepid was having normal interaction with the nameserver,
but jaunty was unable to reach Ubuntu domains. A strace of a failing w3m
process can be found here:
The libc6 package from Colin Watson's PPA both fixes non-working
connection in GNOME apps (Bug #312104) and makes the name resolution
fast again. Thanks
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The libc6 package from Colin Watson's PPA fixed my problem of not being
able to resolve DNS entries on a DNS server that did not support IPv6.
There appears to be no ill side effects.
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I am unable to install the packages from the ppa , I had already updated
to a later version by the time I saw them and the do not showup in
synaptic . any suggestions ?
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Yes, Loic uploaded a newer version to Jaunty proper. You could install
them with 'sudo apt-get install libc6=2.9-0ubuntu10ppa1', or I could
upload a newer version to my PPA - but, given the confirmations above, I
think I'm just going to upload 2.9-0ubuntu12 to Jaunty with this fix.
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Thanks to everyone who tested!
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clerum: I honestly think this is unlikely to be related to that bug. It
will probably help us if multiple maybe-similar-but-possibly-not bug
reports aren't conflated into one issue; when that happens it is very
difficult to know when we're making progress!
Could people affected by the original
I think that this may be related to
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/254622
What I'm seeing on the wireshark captures is that even between two
systems on the same LAN connectivity between two IPv6 addresses will be
much slower due to the packets being sent with sizes much
** Changed in: glibc (Fedora)
Assignee: (unassigned) = Colin Watson (kamion)
** Tags added: qa-jaunty-foundations
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I'm also experiencing this issue. I just upgraded to Jaunty and tested
the following applications :
- apt, Failed to fetch
http://archive.ubuntu.com/ubuntu/dists/jaunty/Release.gpg Could not resolve
'archive.ubuntu.com'
- pidgin, connects to GTalk (gmail.com), but refuses to connect to ICQ
I am also having this problem.
I am almost positive it is not a router issue but an ISP issue. My
reasoning is this. When I use my ISP's dns wget will not work. However
if do wget -4(which forces ipv4) it does work. Further, if I switch the
DNS server in /etc/resolv.conf to a ipv6 capable DNS
it is probably both a problem with some routers and some dns servers ,
on my system bypassing the router and plugging directly into my cable
modem eliminates the problem for me . the problem is that some routers
and some servers are not ipv6 capable at this time so we need to be able
to disable
** Changed in: glibc (Fedora)
Status: Unknown = In Progress
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If Firefox is not affected then is the wrong bug, AFAIK every component
in the system is affected, even Synaptic is slow to begin to download
the packages.
Anyway, here's the output of strace.
** Attachment added: w3m.trace
http://launchpadlibrarian.net/21851307/w3m.trace
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IPV6 causes
I think this bug (that seems related to the one Colin's posted) is worth
a look: https://bugzilla.redhat.com/show_bug.cgi?id=459756
Note: I've used Fedora 9 and I've had the same issues reported here,
then Fedora 10, same issues but after one month or so from release,
suddenly, the dns slowness
Looks like it, thanks. I'm travelling this weekend but will look at
pulling out the relevant patches from Fedora next week; however I'm not
sure I'll be able to construct an IPv6 testbed next week to make sure
that we don't regress that, so an upload might have to wait until the
week after.
**
here is the w3m strace from my sys , this is with a cabled connection to
the router in question , no wireless .
** Attachment added: w3m.trace
http://launchpadlibrarian.net/21855744/w3m.trace
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OK, so neither of you have global-scope addresses. That points to either
a regression in glibc, or some other application implementing its own
resolver that doesn't play by our rules.
** Changed in: glibc (Ubuntu)
Sourcepackagename: linux = glibc
** Changed in: glibc (Ubuntu)
Assignee:
Curiously, I can't reproduce this using any of the applications I've
tried. While I do have some level of IPv6 networking, I've deliberately
turned it off for this test, and in any case I'm testing at the tcpdump
level; I can clearly see the A and queries going out in parallel,
rather than
I wonder if this is
http://sources.redhat.com/bugzilla/show_bug.cgi?id=7060 ? Using a
certain amount of guesswork, I traced the problem as far as
gethostbyname4_r myself, then found that bug.
That said, the comments on the patch near the end say that Firefox is
*not* affected.
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IPV6 causes
Since Ubuntu 9.04 the dns lookups are very slow, and it's indeed ipv6
fault (proven using network.dns.disableIPv6=true in Firefox).
** Attachment added: ifconfig
http://launchpadlibrarian.net/21288934/ifconfig
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You
Although I have not investigated the network traces in this bug in any
detail, people investigating it (particularly JoeKlein, who touches on
similar issues) may like to bear in mind that we used to have a problem
along these lines in Ubuntu, but adjusted glibc's resolver code in order
to avoid
With regard to the specifics of this bug report, we would prefer, if
possible, to make any necessary further fixes to glibc and other similar
resolver code rather than returning ipv6 to its previous modular state
in the kernel. Remember that this has only happened in a development
cycle, which is
attached is the output of ifconfig . eth0 is the connection to the
router that doesn't play nice with ipv6 . Wlan0 is connected through a
different router and isp and does work with ipv6 , if you wish I can
shut down wlan0 if it is confusing the situation.
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oops forgot to attach the file
** Attachment added: ifconfig
http://launchpadlibrarian.net/21185966/ifconfig
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** Description changed:
- starting with kernel 2.5.28-4 ipv6 is built in and cannot be disabled .
+ starting with kernel 2.6.28-4 ipv6 is built in and cannot be disabled .
this causes very sloow internet access for people who have routers or
isp's that are non compliant . Prior to 2.6.28-4
** Attachment added: tcpdump.txt
http://launchpadlibrarian.net/20912199/tcpdump.txt
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For a long time it was not giving any output hence in another window
gave a
$ ping -ac 5 192.168.1.1
after which one starts seeing some action on that tcpdump.txt
Lemme know if anything more is needed.
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JoeKlein,
I have installed show IP, it gives me Ipv4 addresses all the time, not ipv6.
Today morning, the link died unexpectadly, not on the router but for
some unexplainable people not able to hook up/listen to the net.
I tried repeatedly on 2.6.28.4 as well as 2.6.28.3 but to no avail.
I
Shirish,
If you use Firefox as a webbrowser, you can install the ShowIP plugin. It
will show the IPv6/IPv4 address of the current page in the status bar.
If you are not using Firefox, my I suggest one of the following sites to
check if you are getting both DNS resolution (IPv4 or IPv6 transit)
Ignore that. This might be a starting point.
http://www.ipv6.org/v6-www.html
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I can resolve ipv6 addresses too (but cannot access ipv6 websites) but
I'm still affected by this bug.
Disabling ipv6 in firefox (about:config, set network.dns.disableIPv6)
fixes the issue (in firefox) for me (pages load visibly faster). Can
others here test it?
** Tags added:
Is there a way to know which are ipv6 websites?
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IPV6 causes slow internet
I have already purchased a new router to replace the belkin that does
not play nice with IPV6 , however I do not think that this is a way that
casual users or first time tryers will find acceptable . the quick and
dirty way to handle this atleast for the time being would be to either
return to the
** Attachment added: tcpdump.txt
http://launchpadlibrarian.net/20891532/tcpdump.txt
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As one can see the tcpdump.txt seems to be going fine. But what I wanna
know is :-
a. Is my router ipv6 ready or no? Is there anyway to test that?
b. I know quite a few dns nameservers that my ISP has. Is there anyway to test
if they are Ipv6 ready?
--
IPV6 causes slow internet access
Your router seems to do fine with ipv6 name resolution over ipv4.
Can't tell what happens with an ipv6-based network. Tried pinging inside your
local network with ping6?
Your nameserver already responds to ipv6 queries:
dig @218.248.240.181 ipv6.google.com +short
ipv6.l.google.com.
Replace the ip with the one of your router.
This dumps dns traffic only, probably what you need:
sudo tcpdump -nls128 host 192.168.1.1 and port 53 | tee tcpdump.txt
This dumps everything going from/to your router:
sudo tcpdump -nls128 host 192.168.1.1 | tee tcpdump.txt
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IPV6 causes slow
The are other problems too with forcing ipv6 enabled for everyone.
Some apps arn't prepared well and totally drop ip4 connectivity.
In the short time since the change to build-in ipv6 I had already vino-
server (Bug #196675) and gobby (Bug #313393) fail me. I'm sure there are
more waiting in the
Hi Marmuta,
What do I do, I have two ethernet ports, one (eth0) not used, the
other (eth1) being used
~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:07:95:44:10:db
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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attached are tcpdumps with ipv6 disabled (tcpdump1.txt) and enabled and
loaded (module) . Note these were taken with my hardy box ( ubuntu 8.04)
since that was easier to do , it shows exactly the same symptoms with
ipv6 enabled . hardy kernel is 2.6.24-22-generic . I can do tcpdumps
with my
opps dump1 didn't attach here it is
** Attachment added: tcpdump1.txt
http://launchpadlibrarian.net/20878526/tcpdump1.txt
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@Shirish Agarwal
Try this:
sudo tcpdump -nls128 -i eth1 | tee tcpdump.txt
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sojourner, did your router reboot during tcpdump2.txt?
It didn't respond for 30s beginning from 06:28:31.
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no that was a period where nothing was loading , after my initial pages
loaded I paused to take a peek at what had been written so far and then
loaded a couple of more pages .
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** Attachment added: BootDmesg.txt
http://launchpadlibrarian.net/20861732/BootDmesg.txt
** Attachment added: CurrentDmesg.txt
http://launchpadlibrarian.net/20861733/CurrentDmesg.txt
** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/20861734/Dependencies.txt
**
Thank you for reporting this issue.
Please provide more details on why it seems slow. Where do you see the
delays? How is your system and network configured? How can this be
reproduced for testing?
** Changed in: linux (Ubuntu)
Status: New = Incomplete
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IPV6 causes slow internet
network is configured by network manager as open (no encryption )
network is wired with a belkin f5d7230-4 router and mororola cable modem
, ISP is comcast (us) , system is jaunty ,currently instaled with daily
alternate amd64 destop dated dec 31 08. I can tell ipv6 is the problem
because prior to
I think my problem is related. Since updating to jaunty I cannot use my
default dns server (my router) and I have to change my resolv.conf to
use my isp's resolv.conf (my other computers running intrepid and other
OSs have no problem with my router's dns handling). See Bug #312104
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use my isp's resolv.conf
I meant use my isp's dns server
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Regardless of the router slowness: the issue is that the choice to
disable it *apparently* is no longer there.
I currently have daemons listening on a non-existent IPv6 network.
Likewise if I had IPv6, the choice to disable IPv4 would be appreciated.
Thanks
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IPV6 causes slow internet access
All,
I am unsure that it would be considered a bug, instead, a set of decisions,
based on your environment (routers, hosts, ISP, security) and a set of
configurations. I am working on a decision tree and documentation to help
fix this problem. Please give me a few weeks.
Joe Klein
On Fri, Jan
in my opinion it is a bug and also a regression in that it causes
problems for people with some very common hardware . atleast here in the
US (the only country for which I can speak) belkin is a very well known
and widely available brand and my model is their low end and low
price model . It has
Sounds like we need to get to the bottom of what is causing the
timeouts. Hopefully it can be resolved in a way that is not slow, and
also allows both ipv4 and ipv6 without requiring manual configuring or
disabling by the user.
I expect that it would help to compare tcpdump traces on your host
how do I do a tcpdump trace ? I can eaisly configure my system to have
or not have the delay , simply unplug a cat5 cable and enable a wireless
network or if you want it done on the same box/router/isp it will have
to be done under an earlier kernel because in 2.6.28-4 ipv6 is not
loaded as a
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