# IPv6 and Ruby on Rails

**URL:** <https://www.ruby-forum.com/t/ipv6-and-ruby-on-rails/118084>\
**Category:** Rails\
**Created:** [October 23, 2007, 7:32pm UTC](https://www.ruby-forum.com/t/ipv6-and-ruby-on-rails/118084 "2007-10-23T19:32:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mgreenly](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85f322/32.png) [@mgreenly](https://www.ruby-forum.com/u/mgreenly)\
**Post date:** [October 23, 2007, 7:32pm UTC](https://www.ruby-forum.com/t/ipv6-and-ruby-on-rails/118084/1 "2007-10-23T19:32:34Z")

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So… how many things will break if I enable IPv6 on my web server?  
I assume Mongrel cannot handle IPv6 yet? What about Ruby’s CGI  
library?

I’m worried things like request\_ip are quite likely IPv4 specific  
somewhere in the chain…

–Michael

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**Author:** ![mgreenly](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85f322/32.png) [@mgreenly](https://www.ruby-forum.com/u/mgreenly)\
**Post date:** [October 24, 2007, 6:39am UTC](https://www.ruby-forum.com/t/ipv6-and-ruby-on-rails/118084/2 "2007-10-24T06:39:17Z")

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On Oct 23, 2007, at 1:31 PM, Michael G. wrote:

> So… how many things will break if I enable IPv6 on my web server?

I’ve run setups with mongrel behind Apache with no issues. YMMV.

-faisal

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**Author:** ![mgreenly](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/85f322/32.png) [@mgreenly](https://www.ruby-forum.com/u/mgreenly)\
**Post date:** [October 24, 2007, 4:48pm UTC](https://www.ruby-forum.com/t/ipv6-and-ruby-on-rails/118084/3 "2007-10-24T16:48:01Z")

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But WITH IPv6, or only IPv4?

–Michael