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Tunnelbroker setup in a small VM

Hi,

How can I enable protocol 41 (6to4) on firewall? Is that possible? I read somewhere protocol 41 is not supported. It was enabled and I couldn't see any traffic in the log and no RX packets on the interface.

Of course I know there is dual stack VPC possibilities but my VM is very small (e2-micro). 

TIA,

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