&quot;ssh 0&quot; or &quot;ssh ::&quot; works fine too. Also &quot;<a href="http:&#x2F;&#x2F;0&quot;" rel="nofollow">http:&#x2F;&#x2F;0&quot;</a> or &quot;<a href="http:&#x2F;&#x2F;" rel="nofollow">http:&#x2F;&#x2F;</a>[::]&quot;.