I did a quick capture with Wireshark (this time using Hyper-V on Windows
10) and indeed the VM sends out a solicit, but I don't see any evidence
of it reaching the router (nothing in the logs). DHCP Guard is switched
off but I think that would affect a DHCP server, not a client. Plain
SLAAC with my custom DNS server set appears to work correctly, so RA's
are getting to the VM just fine.
I also did a capture with the same ISO in VirtualBox, and it exchanges
DHCPv6 messages with the router right away.
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DHCPv6 does not work in Hyper-V
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