add note about wireguard as ipv6 tunnel

docs/ipv6-rotator.md

@@ -29,7 +29,7 @@ Nowadays, it's hard to find one that does not support IPv6.
 The alternative, if you do not want to switch provider, is to use an IPv6 tunnelbroker, it allows to get IPv6 connectivity using another server.
 
 This website lists all the free and paid existing tunnelbrokers: https://tunnelbroker.services/. **We do not recommend running a public instance on a free tunnelbroker as this would put a lot of strain on their network because video streaming consumes a lot of bandwidth.**  
-You can also use an external server for acting as a tunnelbroker.  
+You can also use an external server for acting as an IPV6 tunnel. Wireguard is perfectly suited for that.  
 All of this is out of scope of this tutorial, please consult the internet for tutorials.
 
 #### 2) System packages requirement
@@ -116,4 +116,4 @@ If the script does not work for you, it could be that:
 - Your provider does not allow you to assign any arbitrary IPv6 address, it's common for cloud providers like AWS, Oracle Cloud, Google Cloud where you need to manually assign the IPv6 address from the panel.
 - You have not correctly set your IPv6 subnet range. In such case, please ask for help on IRC or Matrix or in a GitHub issue.
 
-If you find any other issues, please open a bug report there: https://github.com/iv-org/smart-ipv6-rotator/issues
+If you find any other issues, please open a bug report there: https://github.com/iv-org/smart-ipv6-rotator/issues