106 lines
2.1 KiB
Markdown
106 lines
2.1 KiB
Markdown
title: How to enable IPv6 in applications
|
|
---
|
|
pub_date: 2019-09-26
|
|
---
|
|
author: Team ungleich
|
|
---
|
|
twitter_handle: ungleich
|
|
---
|
|
abstract:
|
|
New to IPv6? Wondering how to enable IPv6 in your favorite
|
|
application? Then this blog entry is for you.
|
|
---
|
|
body:
|
|
|
|
In this blog article you'll find some hints on how to enable IPv6 for
|
|
various applications.
|
|
|
|
## nginx
|
|
|
|
The web server nginx by default only listens to IPv4 if you use
|
|
the standard `listen *:80;` directive. To enable IPv6, use
|
|
`listen [::]:80;`. So for a dual stack server, your configuration
|
|
could look as follows:
|
|
|
|
|
|
```
|
|
server {
|
|
listen *:80;
|
|
listen [::]:80;
|
|
|
|
...
|
|
|
|
}
|
|
|
|
```
|
|
|
|
## haproxy
|
|
|
|
There are various interesting configuration options in HAProxy related
|
|
to IPv6. Let's have a look at each of them!
|
|
|
|
To enable IPv6 transport for the local logging, use `log [::1]` in the
|
|
global section:
|
|
|
|
```
|
|
global
|
|
log [::1] local2
|
|
...
|
|
|
|
```
|
|
|
|
If you want a frontend to listen to either IPv6 or IPv4 only, you can
|
|
use the `ipv6@` prefix as follows:
|
|
|
|
```
|
|
# IPv6 http frontend
|
|
frontend httpipv6
|
|
bind ipv6@:80
|
|
mode http
|
|
|
|
|
|
# IPv4 http frontend
|
|
frontend httpipv4
|
|
bind ipv4@:80
|
|
mode http
|
|
...
|
|
|
|
```
|
|
|
|
If you want to connect to the backends only via a specific protocol,
|
|
we can use the prefix syntax there as well:
|
|
|
|
```
|
|
backend httpipv4
|
|
mode http
|
|
use-server ungleich.ch if { hdr(host) -i ungleich.ch }
|
|
server ungleich.ch ipv6@ungleich.ch
|
|
...
|
|
```
|
|
|
|
To proxy IPv6 requests to IPv4 only [twitter](https://twitter.com), you could
|
|
use the following configuration:
|
|
|
|
```
|
|
# ipv6 https
|
|
frontend httpsipv6
|
|
bind ipv6@:443
|
|
mode tcp
|
|
option tcplog
|
|
tcp-request inspect-delay 5s
|
|
tcp-request content accept if { req_ssl_hello_type 1 }
|
|
default_backend httpsipv6
|
|
|
|
backend httpsipv6
|
|
mode tcp
|
|
use-server twitter.com if { req_ssl_sni -i twitter.com }
|
|
server twitter.com ipv4@twitter.com
|
|
```
|
|
|
|
|
|
## Other applications
|
|
|
|
If you know about other applications or want to enhance one of our
|
|
configuration, we invite you to join the [IPv6
|
|
chat](https://IPv6.chat) or [write to us on
|
|
Twitter](https://twitter.com/ungleich).
|