Allow configuration for IPv4 binding

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Ory Network Project

No response

Describe your problem

Golang by default binds to IPv6, which doesn't work for everybody.
It would be nice if we could specify tcp4 for:
https://github.com/ory/x/blob/6511eb1be9fe8389e93b50955a88121c1b728b22/networkx/listener.go#L30

Describe your ideal solution

Ideally the parent service config can pass down an override for the IPv4 vs IPv6 binding with a default to IPv6.
I can push the PR, but I am not sure if we want to offer another function to avoid a breaking change in the interface.

func MakeListener(network string, address string, socketPermission *configx.UnixPermission) (net.Listener, error)

Workarounds or alternatives

There is none right now.

Version

Kratos 1.1.0

Additional Context

No response

Start by reading networkx/listener.go at the referenced listener implementation and inspect the MakeListener entry point. Trace how parent service configuration reaches it and determine how a network override can default to IPv6 without breaking the existing interface. Done means callers can select tcp4 or the default IPv6 behavior, with the relevant listener behavior verified.