Wow what a difference disabling ipv6 on ubuntu makes!

RadiclDreamer

Diamond Member
Aug 8, 2004
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I've been using ubuntu for quite some time and noticed that network apps and web browsing seem to be a bit sluggish when using it. Today I came across an article on the ubuntu forums that mentioned disabling ipv6 in order to speed up things. I tried it and WOW! Does it ever make a difference!

I just wanted to stop by and spread the info just in case anyone else is having the issue

http://ubuntuforums.org/showthread.php?t=260489
 

n0cmonkey

Elite Member
Jun 10, 2001
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I wonder why ipv6 slows it down that much.

EDIT: According to rifleman in the original thread (not the one linked above) Ubuntu looks to connect to a system using ipv6 first and that has to die before it'll try ipv4.
 

nweaver

Diamond Member
Jan 21, 2001
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yeah, I hate IPV6 right now, as it's causing me several headaches in Ubuntu. I now just disable it.
 

Noema

Platinum Member
Feb 15, 2005
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Yeah, I've noticed the same. It's not so much that the connection itself is slow (I get the same download rates in Ubuntu than in XP) but it just takes forever for the connection to get stablished with the server. I'll try this tonight when I get home from work.

I noticed the same in Xubuntu (normal transfer rates but it takes forever to connect to the server) and I wonder if IPv6 loads into Xubuntu's kernel by default as well. Probably does...I'll check when I go visit my folks this weekend.
 

n0cmonkey

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Jun 10, 2001
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Shoot, I meant to see if this affected my Fedora machine. Although, I don't notice any problems...
 

Nothinman

Elite Member
Sep 14, 2001
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Same here, everytime I've messed with disabling it on Debian I've never noticed a difference.
 

IamDavid

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Sep 13, 2000
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I don't understand the problems it causes in Ubuntu. It's also crazy it's been going on since the beginning.. Some don't even acknowledge it's a problem.. To me it discourages new users which have always been *nix's main problem IMO...
 

n0cmonkey

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Jun 10, 2001
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Originally posted by: IamDavid
I don't understand the problems it causes in Ubuntu. It's also crazy it's been going on since the beginning.. Some don't even acknowledge it's a problem.. To me it discourages new users which have always been *nix's main problem IMO...

Disable ipv6 and you discourage all of the ipv6 users out there.
 

IamDavid

Diamond Member
Sep 13, 2000
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Originally posted by: n0cmonkey
Originally posted by: IamDavid
I don't understand the problems it causes in Ubuntu. It's also crazy it's been going on since the beginning.. Some don't even acknowledge it's a problem.. To me it discourages new users which have always been *nix's main problem IMO...

Disable ipv6 and you discourage all of the ipv6 users out there.

So when ipv6 become "the standard" will it run as slow as now? If so I love the 90's...
 

n0cmonkey

Elite Member
Jun 10, 2001
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Originally posted by: IamDavid
Originally posted by: n0cmonkey
Originally posted by: IamDavid
I don't understand the problems it causes in Ubuntu. It's also crazy it's been going on since the beginning.. Some don't even acknowledge it's a problem.. To me it discourages new users which have always been *nix's main problem IMO...

Disable ipv6 and you discourage all of the ipv6 users out there.

So when ipv6 become "the standard" will it run as slow as now? If so I love the 90's...

Is ipv6 slow?
 

futuristicmonkey

Golden Member
Feb 29, 2004
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Originally posted by: IamDavid
Originally posted by: n0cmonkey
Originally posted by: IamDavid
I don't understand the problems it causes in Ubuntu. It's also crazy it's been going on since the beginning.. Some don't even acknowledge it's a problem.. To me it discourages new users which have always been *nix's main problem IMO...

Disable ipv6 and you discourage all of the ipv6 users out there.

So when ipv6 become "the standard" will it run as slow as now? If so I love the 90's...

There's nothing wrong with ipv6 (except when I try to convert and write the damn things) - it's ubuntu's implementation that sucks.
 

nweaver

Diamond Member
Jan 21, 2001
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it' more likely not Ubuntu's fault per se (other then defaulting and waiting), it seems slow because noboday ANSWERS your ipv6 request....in 2008, when IPV6 spreads to 6 users, it will be faster.
 

Nothinman

Elite Member
Sep 14, 2001
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There's nothing wrong with ipv6 (except when I try to convert and write the damn things) - it's ubuntu's implementation that sucks.

No, Ubuntu's implemenation is fine. Hell it's the same one that all Linux distros are using. The problem is that no one responds to IPv6 requests yet so when you do a name lookup and it tries IPv6 first it has to timeout and fall back to IPv4, why it seems to affect Ubuntu more than other distros is up in the air though.
 

RadiclDreamer

Diamond Member
Aug 8, 2004
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Well, regardless i thought it was a useful tip and wanted to pass it along, hope those of you that tried it got as much of an increase in speed as i did