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IPv6 VMs with no IPv4


phillcampbell
29-01-2014, 15:52
I use npd6 to force my firewall (debian/iptables) on my ESXi dedicated box to respond to all neighbor discovery packets in my IPv6 range.

https://code.google.com/p/npd6/

This, combined with "net.ipv6.conf.all.proxy_ndp = 1" in my firewalls sysctl.conf in order to proxy the neighbor discovery packets to my internal VMs allows me to assign global IPv6 addresses to my internal VMs with no IPv4

r999
29-01-2014, 14:45
Quote Originally Posted by Neil
Hi

Currently at the moment it is not something we support, technically each VM should have a /64 (The smallest block available).
Does anyone know if this has now been implemented?

I would like to run a couple of VM's IPV6 only to save the limited number of IPV4 that I have.

Have tried but it doesn't seem to work IPV6 only.

Myatu
11-11-2011, 17:55
OVH does something really weird with their IPv6 addressing. I wish they'd fix that...

NAT does not exist in IPv6, but there are several ways to get force a route though, including IPv6 forwarding or manipulating the neighbors table (ie: ip -6 neigh add 2001:dead:beef::1 lladdr 0A:0B:0C:0D:0E:0F dev vmbr1).

positron
11-11-2011, 16:25
Wonder if it's possible to set up NAT from the host to the VMs, then route IPv6 addresses assigned to the host to the VMs, creating what is essentially an IPv6 address per VM (and shared IPv4 address with the host)

Neil
11-11-2011, 11:28
Hi

Currently at the moment it is not something we support, technically each VM should have a /64 (The smallest block available).

DanM248
11-11-2011, 11:17
Nope it doesnt work as yet. from my testing

positron
11-11-2011, 01:28
Does OVH currently support VMs without IPv4 enabled to use IPv6?
I have tried to assign an IPv6 address to a VM without IPv4 and it seems to fail. (unreachable gateway)
Note that this is the same setup as the host, and another VM with IPv4, both of which worked.