Specifically, it is roaming <i>between IPv6 and IPv4</i> that is problematic.  According to Anders Kaseorg, roaming <i>amongst IPv6 nodes</i> works fine.<p>* <a href="https:&#x2F;&#x2F;github.com&#x2F;mobile-shell&#x2F;mosh&#x2F;pull&#x2F;453" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;mobile-shell&#x2F;mosh&#x2F;pull&#x2F;453</a><p>* <a href="https:&#x2F;&#x2F;github.com&#x2F;mobile-shell&#x2F;mosh&#x2F;issues&#x2F;81" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;mobile-shell&#x2F;mosh&#x2F;issues&#x2F;81</a>