alt Hacker NewsI made my homepage (www.makonea.com) support IPv6 too, but the number of people actually using it is much smaller than I expected. Is IPv6 really that widely used? I'm supporting both because I heard it's good to support both, but I'm not sure what the actual benefit is. Sometimes, when behind Cloudflare, I think even if someone connects via IPv6, it ends up coming through as IPv4
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When hosting a server IPv6 doesn't make a huge difference beyond your logs will probably be a bit more accurate, people behind CGNAT where an ISP has multiple customers sharing a block of IPv4 will show up with their actual IPv6 address. They'll maybe also find it slightly quicker because they're not being funnelled through NAT gateways but realistically not enough to notice.
From the user side IPv6 is great for me. My ISP is using CGNAT and would bill me ten pounds a month for a static IPv4 address but I automatically get a vast block of IPv6. I'm using that block to allow me to VPN back home when out and about, and if I wanted to I could also host services from devices on my home network without needing any NAT nonsense, I can just open access to the relevant device on the router. (Because this is a world where not everywhere supports IPv6 yet if I'm on an IPv4 only network the VPN endpoint is a dedicated server I rent which forwards the relevant port back to my home router over IPv6)
> Is IPv6 really that widely used?
Mobile carriers use it almost exclusively, which is already a huge chunk of the internet, and newer ISPs are switching to it too.
> I'm supporting both because I heard it's good to support both, but I'm not sure what the actual benefit is.
The benefit is that you allow IPv4-only and IPv6-only clients to connect.
My selfhosted email has been dual stack for close to a year and my eyeball estimate of the logs is around 10% of the traffic is IPv6.
A lot of internet spambots and vulnerability scanners are v4 only. I discovered this when I found an open mail relay on v6, contacted the owner and he said it's been like that for ages due to a config mistake and he'd never heard a complaint. It wasn't an open relay on v4.
It's good to support it to resolve the chicken egg problem. If no service supports it, there is no sense in deploying it to the customers and the other way around.
Also you made the life better of people who have DS lite. They only get a public IPv6 and all their IPv4 traffic goes through a CGNAT.