Ipv6 not passing through upstream on MACVLAN Debian NSPAWN container

[zs311521]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

Even after enabling forwarding on interfaces, following the instructions, PING -6 google.com or other sites do not work.

AA records are resolved. IPV6 works internally across clients. MACVLAN is set up.

Can we set up bridge mode instead? For pi-hole like applications. Or, is there a way to get ipv6 working - or not in MACVLAN?

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

UDM Information

• Variant [e.g. Dream Machine, Dream Machine Pro]
• Firmware Version: [e.g. 1.6.3, 1.7.2-rc4]
• Controller Version [e.g 5.14.9]

Additional context
Add any other context about the problem here.