Doc error: default listen_address

[twm]

The readme says:

bind_address : The address to bind on. Defaults to 0.0.0.0

However the actual default is :::

statsite/src/config.c

Line 33 in 8422ff6

"::", // Listen on all addresses

[johnkeates]

That is mostly correct: the documentation only reflects IPv4, but opening a socket on :: causes it to listen on both IPv4 and IPv6 for all of the addresses on the host. We should probably update the documentation to reflect that. On the other hand, if you don't have IPv6 available it will just listen on IPv4 instead.

[twm]

Actually, if you have fully disabled the IPv6 stack it will fail to listen. That's what bit us.

[johnkeates]

Ah yeah, the sysctl to completely disable it will probably do that. I've seen the same in FreeIPA for example. A lot of things tend to break when that happens, in most cases it's not needed because you can simply deconfigure all ipv6 from your interfaces to not use ipv6 but leave the stack alive so it can still auto-downgrade to ipv4. Perhaps someone can make it configurable to explicitly listen to ipv4-only for those use cases.