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Chromecast network #1080

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Aug 31, 2024
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6 changes: 5 additions & 1 deletion docs/general/networking/index.md
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,11 @@ HTTP and HTTPS are the primary means of connecting to the server. If using a sel

:::caution

In order for Chromecast to work on a non-public routable connection, 8.8.8.8 must be blocked on the Chromecast's Gateway. Blocking 8.8.8.8 on your router is the easiest solution to this problem.
In order for Chromecast to work on your local LAN, the easiest solution is to use IPv6 instead of IPv4.
For IPv4, you need to use NAT reflection to redirect to your local LAN IPv4 or add a override rules to your local DNS server to point to your local LAN IPv4 (for example 192.168.1.10) of Jellyfin.
Because Chromecasts have hardcoded Google DNS servers, you need to block Chromecast from reaching these servers (8.8.8.8) so it makes use of your local DNS server instead.
For a public routable IPv6 (not a link-local or ULA) there is no difference between public or local. Such IPv6 address is simultaneously publicly routable and accessible from the local LAN.
Because of that, there is no blocking, redirecting or DNS override needed.

:::

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