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by jeroenhd 1116 days ago
For what it's worth, and if you're willing to tinker, you can get IPv6 for free through a tunnel as long as your router responds to ICMP: https://tunnelbroker.net/

You can get a bunch of /64s and a /48 for free because HE really wants everyone to have IPv6 available already. Picking the right internet exchange to route from and making Netflix not throw a fit requires some minor experimentation but I've found it to work quite well.

As an added bonus, because of the way IPv6 route advertisements work, you don't have to have a router with tunneling support. You can set up advertisements from any Raspberry Pi or other computer as long as it has outbound connectivity.
3 comments
agwa 1116 days ago
The SIP provider would also need to support IPv6 for this to do any good. voip.ms does not: https://wiki.voip.ms/article/FAQ#Do_you_Support_IPV6_with_SI...
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jeroenhd 1115 days ago
That's rather silly. Getting IPv6 connectivity is usually the difficult part, and servers are the easiest things to get IPv6 for. I wonder what part of their tech stack is still incompatible after all these years.
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agwa 1115 days ago
The quality of VoIP software tends to leave a lot to be desired, in my experience.

None of the 4 VoIP providers I've worked with support IPv6 :-/

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remram 1116 days ago
> You can set up advertisements from any Raspberry Pi or other computer as long as it has outbound connectivity.

You mean send the advertisement and do the SIT tunneling on that machine?

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jeroenhd 1115 days ago
Correct! It's relatively straightforward, actually: https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/pos...

You use one of the /64 tunnels provided for you to route the /48 tunnel to the rest of your network. You advertise a subnet from your /48 to your local network and if you've got SLAAC enabled on your hosts that's all there is to it.

You may need to mess with the default DNS server to get IPv6 results, though, that depends on whether or not your standard DNS server will respond to AAAA requests. It usually should, but some ISPs don't.

This only works for a flat network, of course. If you've got different routers, you'll need to set up a more complicated setup.

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da768 1116 days ago
Last time I tried Tunnelbroker, it caused major performance issues. Not sure it's a good thing for VoIP calls.
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