On Sat, 14 May 2022, Ludovic Courtès wrote:
Hi,
Thinking about it, what do you think is the risk of using AF_INET6
unconditionally?
AFAICS it just works. Is there a switch somewhere that might affect
that behavior?
Yes, I beleive that it's in sysctl:
```
$ sysctl net.ipv6.bindv6only
net.ipv6.bindv6only = 0
```
If enabled, the v6 socket wouldn't work for v4. Disabled is the default on
Guix System. I don't know what would happen if v6 were disabled entirely.
Hopefully that's not something we have to worry about in 2022.
HTH,
Jack
