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If the block size is a /64, you will have to create a bridge, and attach the primary network adaptor of the machine along with the VM network interface.
You should then be able to use the /64 block as usual.
If the block size is larger than a /64, you can take a /64 (this is the smallest ipv6 for routing) from the block, and assign that to the primary network interface. Assign another /64 block from the same ipv6 block, and the traffic should work. May require NDP proxying/etc.
See http://www.gestioip.net/cgi-bin/subnet_calculator.cgi for a calculator
the block size is larger than /64
i want to route all of them into the VM without assigning it to the server network interface, is it possible?
i already try assigned one of the ipv6 block directly to the VM1, and its working fine, but somehow it did not work in the VM2 when i try to assign the other ipv6 block,
Use a bridge in that case.
how to do that?
here is my /etc/network/interfaces on the server
auto vmbr0
iface vmbr0 inet static
address 172.xx.xxx.xx
netmask 255.255.255.248
gateway 172.xx.xxx.xx
bridge_ports eth0
bridge_stp off
bridge_fd 0
auto vmbr1
iface vmbr1 inet static
address 192.168.18.1
netmask 255.255.255.0
bridge_ports none
bridge_stp off
bridge_fd 0
post-up iptables -t nat -A POSTROUTING -s '192.168.18.0/24' -o vmbr0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s '192.168.18.0/24' -o vmbr0 -j MASQUERADE
Attach primary network interface of VM to vmbr0
all my VM already bridged to vmbr0, but only VM1 that successfully use the ipv6 block, when i try the same way on then VM2, it didn't work...
Same block, or the second block of ipv6
tried both of them and didn't work..
if someone can help me setting up the network, im ready to pay it, it been 2 days I've try it and fail.