New freelancer here. I work full time as a Site Reliability Engineer and work primarily on Cloudstack, Puppet, Docker and Linux.
I am bidding a very low amount because I am just getting started with freelancing and need good rating :)
Regarding your project, I need more clarification from your end, maybe we can discuss this on call sometime? From my current understanding, you want to be able to ping google (or any other site) from inside container using ipv6, if your server supports ipv6 then this should be fairly trivial to achieve. Do let me know :)