roku without internet

I want a jellyfin display client Trying a roku, but it is unhappy without internet, it complains and also the clock is wrong

I want to have clock without internet

literature review

wireshark capture from boot to has time

Started capture, booted device, stopped capture once it had time

No ntp, it's basically all tls

DNS requests:

api.rokutime.com sounds promising:

A api.rokutime.com CNAME api-weights.us-east-1.rokutime.com CNAME api.us-east-2.rokutime.com CNAME rokumesh-2-device.us-east-2.msc.roku.com A 3.20.27.28 A 3.128.227.227 A 18.217.208.75

We actually talk to all three of them, woooo


Anyway, it's all tls, so I gave up for now. It's basically working fine if you ignore the clock.