title: Can't ping docker IPv6 container
body: <p>I ran docker daemon for using it with global IPv6 for containers:</p>
  
  <pre><code>docker daemon --ipv6 --fixed-cidr-v6="xxxx:xxxx:xxxx:xxxx::/64"
  </code></pre>
  
  <p>After it I ran docker container:</p>
  
  <pre><code>docker run -d --name my-container some-image
  </code></pre>
  
  <p>It successfully got Global IPv6 address( I checked by <code>docker inspect my-container</code>). But I can't to ping my container by this ip:</p>
  
  <pre><code>Destination unreachable: Address unreachable
  </code></pre>
  
  <p>But I can successfully ping <code>docker0</code> bridge by it's IPv6 address. 
  Output of <code>route -n -6</code> contains next lines:</p>
  
  <pre><code>    Destination                     Next Hop                   Flag Met Ref Use If
      xxxx:xxxx:xxxx:xxxx::/64         ::                         U    256 0     0 docker0
      xxxx:xxxx:xxxx:xxxx::/64         ::                         U    1024 0     0 docker0
      fe80::/64                        ::                         U    256 0     0 docker0
  </code></pre>
  
  <p><code>docker0</code> interface has global IPv6 address:</p>
  
  <pre><code>inet6 addr: xxxx:xxxx:xxxx:xxxx::1/64 Scope:Global
  </code></pre>
  
  <p><code>xxxx:xxxx:xxxx:xxxx::</code> everywhere is the same, and it's global IPv6 address of my <code>eth0</code> interface</p>
  
  <p>Does docker required something additional configs for accessing my containers via IPv6?</p>