IPv6 over GRE over IPv4 should work but GRE over IPv6 is not supported.

On Wed, Nov 12, 2014 at 4:18 AM, Arnold Bechtoldt
<m...@arnoldbechtoldt.com> wrote:
> Is there IPv6 support with GRE available at all?
>
>
> Arnold
>
> --
> Arnold Bechtoldt
>
> Karlsruhe, Germany
>
> On 11.11.14 21:57, Arnold Bechtoldt wrote:
>> Dear list,
>>
>> I need to setup IPv6 connectivity in a OpenNebula setup using OVS
>> 2.1.2-1 (via datapath-dkms) on Debian wheezy systems.
>>
>> There are three compute nodes connected via GRE tunnels to each other to
>> provide inter-host connectivity for virtual machines attached to bridges
>> with 802.1Q VLANs.
>>
>> This works great for IPv4. And for IPv6 on L2 bridges routed via ISP's
>> IPv6 default gateway, too.
>>
>> Unfortunately hosts can't communicate each other via IPv6 in a vlan.
>> Which steps are necessary to get them together? Can I use existing IPv4
>> GRE tunnel(s) to encapsulate IPv6 traffic? Do I need dedicated IPv6 GRE
>> tunnels? Can I find more documentation regarding Open vSwitch, GRE and
>> IPv6 on the Net?
>>
>> Thank you in advance!
>>
>>
>> Arnold
>>
>>
>> ==========
>> # uname -a
>> Linux hpm1000 3.2.0-4-amd64 #1 SMP Debian 3.2.63-2+deb7u1 x86_64 GNU/Linux
>>
>>
>> # ovs-vsctl show
>>     Bridge "br0"
>>         Port "vnet52"
>>             Interface "vnet52"
>> ...
>>         Port "eth0"
>>             Interface "eth0"
>>         Port "br0"
>>             Interface "br0"
>>                 type: internal
>>     Bridge "br1"
>>         Port "vnet40"
>>             tag: 11
>>             Interface "vnet40"
>>         Port "vnet3"
>>             tag: 10
>>             Interface "vnet3"
>> ...
>>         Port "gre2"
>>             Interface "gre2"
>>                 type: gre
>>                 options: {remote_ip="172.16.0.13"}
>>         Port "br1"
>>             Interface "br1"
>>                 type: internal
>>         Port "vif0"
>>             tag: 10
>>             Interface "vif0"
>>                 type: internal
>>
>>         Port "gre1"
>>             Interface "gre1"
>>                 type: gre
>>                 options: {remote_ip="172.16.0.12"}
>>     Bridge "br2"
>>         Port "eth1"
>>             Interface "eth1"
>>         Port "br2"
>>             Interface "br2"
>>                 type: internal
>>     ovs_version: "2.1.2"
>>
>>
>> # ip l | grep eth1
>> 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc mq state UP
>> mode DEFAULT qlen 1000
>> ==========
>>
>>
>>
>>
>> _______________________________________________
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>> discuss@openvswitch.org
>> http://openvswitch.org/mailman/listinfo/discuss
>>
>
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