Bug if ipv6 and ipv4 applied together

Could you please explain what issue you are having? What do you expect to happen, and what is happening are needed.

Also... we need to know what version of Nginx you're using and how you installed it.

This bug has been fixed by it's creator for version 0.9.3, 0.8.54 and the legacy 0.7.68
Note : http://nginx.org/en/CHANGES-0.7
and
http://nginx.org/en/CHANGES

"Bugfix: if there was a single server for given IPv6 address:port
       pair, then captures in regular expressions in a "server_name"
       directive did not work."

Sorry i'm forget to inform nginx version

$ apt-cache policy nginx
nginx:
  Installed: 0.7.65-1ubuntu2
  Candidate: 0.7.65-1ubuntu2
  Version table:
 *** 0.7.65-1ubuntu2 0
        500 http://mirrors.kernel.org/ubuntu/ lucid/universe Packages
        100 /var/lib/dpkg/status

$ nginx -V
nginx version: nginx/0.7.65
TLS SNI support enabled
configure arguments: --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --pid-path=/var/run/nginx.pid --lock-path=/var/lock/nginx.lock --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/lib/nginx/body --http-proxy-temp-path=/var/lib/nginx/proxy --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --with-debug --with-http_stub_status_module --with-http_flv_module --with-http_ssl_module --with-http_dav_module --with-http_gzip_static_module --with-http_realip_module --with-mail --with-mail_ssl_module --with-ipv6 --add-module=/build/buildd/nginx-0.7.65/modules/nginx-upstream-fair

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04.1 LTS
Release: 10.04
Codename: lucid

Just for reference, here is the upstream patch: http://nginx.org/pipermail/nginx/2010-December/024161.html

@Daniel
yes already writing at patch file

This is being dealt with upstream. It will be taken care of before Natty release. Please see bug 692087 and note the comment requesting a wait on the sync until 0.8.54-1 where the source is already patched.

Well it is SRU for lucid

Any SRU for Lucid needs to land in Natty first.

This has been fixed in Debian. I don't see where this bug should be SRU'ed. However, the new version of Nginx could be proposed for backports.

Marking as Fix Released as this has been resolved in Debian and the package has since been sync'ed to Ubuntu.

lucid has seen the end of its life and is no longer receiving any updates. Marking the lucid task for this ticket as "Won't Fix".