Disable IPv6 on Hass.io

Hi all, can someone tell me how to disable IPv6 on Hass.io?
I saw that it was possible somewhere but now can’t find it again.

My router doesn’t allow port forwarding via IPv6 so I will to just use IPv4.

Tnx.
g.

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hass.io has no IPv6-address at the moment. (it redirects to home-assistant.io with IPv6)

But I don’t understand your motivation. As long a service has an IPv4-address you can use it, independent from the fact it it has an IPv6-address too.

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Doesn’t appear to have a IPv4 address, or at least I don’t see it registering on my router. Can I find it somewhere?