&gt; Router&#x27;s don&#x27;t care much about the host stuff...<p>Sure. But, I was addressing mixmastamyk&#x27;s assertion:<p>&gt; I&#x27;m not a big fan of 128 bit addresses with ipv6, they are too long to read and write. Does anyone know why 64 bits was not good enough? [0]<p>If you&#x27;re okay with <i>writing and reading 64-bit hex strings</i>, [1] the part that matters to most folks is the host identification part, which is 64 bits long. :)<p>[0] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10837317" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10837317</a><p>[1] I&#x27;m not... that&#x27;s why I use DNS.