VirtualBox doesn’t support IPv6 by default, but it can be made to do so. I need it for some testing in my guest machine.
(I should probably state that my host uses IPv6 — I can see it on What Is My IP Address, among other places.)
To enable IPv6 in VirtualBox, I’m following these instructions to create a NAT Network in VirtualBox, but I’m stuck where I have to enter an IPv6 Prefix.
I have no clue how to choose an IPv6 prefix. I’ve tried various ideas that I’ve found on the internet, but as none of them directly addressed the issue, and I don’t understand what it means, unsurprisingly I’ve not managed to make any of them work!
How do I work out what I’m supposed to put in there, please? (All that I know is that it’s supposed to be a /64 prefix, but I don’t even know what that means. )
I tried QEMU/KVM not that long ago, but it didn’t allow snapshots for VMs with Secure Boot. I also found it far more complex to set up than VirtualBox, so I decided to stick with the latter.
Anyway, on running your command, I get this result:
$ ip a | grep prefix
inet 192.168.55.128/24 brd 192.168.55.255 scope global dynamic noprefixroute wlo1
inet6 2a05:b100:2600:6e00:3ade:a88c:dc27:9229/64 scope global dynamic mngtmpaddr noprefixroute
inet6 fe80::90ac:85df:121c:4239/64 scope link noprefixroute
When I try to use this as the IPv6 prefix:
2a05:b100:2600:6e00:3ade:a88c:dc27:9229/64
I get this error:
Non-zero bits in the interface ID part of the IPv6 prefix 2a05:b100:2600:6e00:3ade:a88c:dc27:9229/64.
When I try to use this as the IPv6 prefix:
fe80::90ac:85df:121c:4239/64
I get this error:
IPv6 prefix fe80::90ac:85df:121c:4239 is not unicast.
Unfortunately, this means absolutely nothing to me. Does this make sense to you?
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