I'm using OMV 6.9.11-4 (Shaitan) . My ISP provides a /56 IPv6 subnet.
My laptop is on Windows 11, IPv4 and IPv6 are configured for DHCP and there are no issues. I get IPs for both protocols and can communicate via IPv4 and IPv6 without problem. Because of that, I would exclude the ISP or a network misconfiguration as a problem.
The OMV NAS is in the same network. I've created a bond device, because it's attached via 2x LAN cables to my switch. The switch is also configured for LACP. In OMV I get an IPv4 address and can reach all internal and external targets. Only IPv6 gets no address from the subnet and I can't use IPv6 for communication. The bond is configured for DHCP on IPv4 and IPv6.
What's the problem here?