ipv6 support

[sp_tcset]

Hello. I'm running plesk 12.0.18 on centOS 6.6 and I have some problems with ipv6 support for a domain. This is what I see in my apache logs for that domain:

2001:8d8:90b:c900::2a:19d1 - - [29/Jun/2015:17:44:55 +0200] "GET /hello.html HTTP/1.0" 404 1208 "-" "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)"
2001:8d8:90b:c900::2a:19d1 - - [29/Jun/2015:17:49:39 +0200] "GET /hello.html HTTP/1.0" 200 384 "-" "curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.16.1 Basic ECC zlib/1.2.3 libidn/1.18 libssh2/1.4.2"

2001:8d8:90b:c900::2a:19d1 is the ipv6 from my server, and it appears there because of nginx working as reverse proxy. As you can see, facebook can't get /hello.html (404 response), but I can get it from another server using curl (200 response). I tried disabling nginx and this is what I see now:

2a03:2880:2110:dff3:face:b00c:0:1 - - [29/Jun/2015:17:55:11 +0200] "GET /hello.html HTTP/1.1" 404 1208 "-" "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)"
2001:8d8:8b3:6000::4e:c5a0 - - [29/Jun/2015:17:54:52 +0200] "GET /hello.html HTTP/1.1" 200 361 "-" "curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.16.1 Basic ECC zlib/1.2.3 libidn/1.18 libssh2/1.4.2"

Still not able to get /hello.html. This is a problem for me because I can't share anything on facebook, since their bot can't find anything on my site.

I've already configured ipv6 for my domain. Any ideas?

 

[sp_tcset]

Ok, I solved this issue. It was .htaccess from Joomla making trouble. These lines caused the error:

RewriteCond %{HTTP_USER_AGENT} ^facebookexternalhit
RewriteRule ^(.*)$ ogtags.php?$1 [L,QSA]
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

Didn't think of this file until this morning!