Setting up IPv6 on Apache2

Question

Currently I have the "ports.conf" with the following content:

NameVirtualHost *:80
Listen 80

<IfModule mod_ssl.c>
    Listen 443
    NameVirtualHost *:443
</IfModule>

<IfModule mod_gnutls.c>
    Listen 443
</IfModule>

So to add IPv6 I have to change it to:

NameVirtualHost 91.64.99.215:80
Listen 91.64.99.215:80

NameVirtualHost [2a01:4f8:140:54e4::3]:80
Listen [2a01:4f8:140:54e4::3]:80

<IfModule mod_ssl.c>
    Listen 443
    NameVirtualHost 91.64.99.215:443
    NameVirtualHost [2a01:4f8:140:54e4::3]:443
</IfModule>

<IfModule mod_gnutls.c>
    Listen 91.64.99.215:443
    Listen [2a01:4f8:140:54e4::3]:443
</IfModule>

Is this correct?

My fear is that if I do this all vhosts set up like

<VirtualHost *:80>
     ServerName www.domain.tld
     ServerAlias domain.tld
     DocumentRoot /www/domain
</VirtualHost>

will go berserk. If this is not the case, doing

<VirtualHost *:80 [*]:80>
     ServerName www.domain.tld
     ServerAlias domain.tld
     DocumentRoot /www/domain
</VirtualHost>

should also make the domain available via IPv6?

I am a bit confused here and cannot make much out of the existing "examples" Any help will be appreciated.

Answer 1

You just need to change your Listen directives to:

Listen [::]:80
Listen [::]:443

while your

NameVirtualHost *:80
<VirtualHost *:80>

remain the same.

Note: netstat -tln will show apache listening only on tcp6 / :::80; that is normal (it will also respond to IPv4 as before)