Migrate setHttpOptionsDefaults in 6.+

[eXist-FraGGer]

Hello guys, I have a very typical case: The Keycloack in kubernetes (minikube), the application in kuberenetes and the cli for the client.
Application is accessing keycloack through service (*.svc.cluster.local), cli is using url with domain.
It will give common error while verifying token that the issuer is not match.

Especially for this in version 5 we had a way to replay the agent, so the code was:

const agent = new (scheme === 'http' ? http : https).Agent({
  lookup: (hostname, opts, cb) => {
    cb(null, [{ address, family }]);
  },
  port,
});

openid.custom.setHttpOptionsDefaults({ agent });

I can not find a way ho to implement this in 6.+ version.

This is not working:

this.config[this.getClient().customFetch] = (url, options) => {
  // return undici.fetch(args[0], { ...args[1], dispatcher: agent }) // prettier-ignore
  return nodeFetch.default(url, {
    ...options,
    agent,
  } as any) as any;
};