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Can I Block Specific Devices from getting IPv6 Address?

Discussion in 'Asuswrt-Merlin' started by Stephen Harrington, Jul 11, 2019 at 3:38 AM.

  1. Stephen Harrington

    Stephen Harrington Regular Contributor

    May 24, 2017
    Sydney, Australia
    Running latest Asuswrt-Merlin 384.12 on an RT-AC86U.

    My ISP has enabled experimental IPv6 support on their infrastructure and I'd like to have a play with it on my network, mostly as a learning exercise at this point. I got it working fine using "Native" mode and with DHCP-PD "Enabled".

    Is there any way through creating/editing Custom Configs or otherwise to block a couple of specific devices from getting an IPv6 address, but still keep getting their (static) IPv4 address "as usual"?

    For example, my main media player is an Apple TV 4K. I use DNS Filter feature to give it an alternate DNS address to get around geo-blocking for some streaming services. If I enable IPv6 on the network though, the Apple TV grabs an IPv6 address, and this appears to take precedence over IPv4 and thus the "alternate" IPv4 DNS no longer works to "aid" my streaming services. There seems to be no way to turn off IPv6 on the Apple TV itself.

    Thanks in advance, any suggestions or discussion gratefully received.