<story><title>Reasons for servers to support IPv6</title><url>https://jvns.ca/blog/2022/01/29/reasons-for-servers-to-support-ipv6/</url></story><parent_chain><item><author>johnklos</author><text>It&amp;#x27;s good to wonder publicly and have a discussion!&lt;p&gt;I set up IPv6 on all my servers in 2001 and thought we&amp;#x27;d all be on IPv6 in just a couple of years :P&lt;p&gt;What&amp;#x27;s interesting is how much resistance there is to adding IPv6 which comes from entrenched IT. People who never learned (much) about IPv6 seem to be afraid of it and often respond with some variant or another of &amp;quot;don&amp;#x27;t fix it if it ain&amp;#x27;t broke&amp;quot;, or &amp;quot;it&amp;#x27;s extra work for no return&amp;quot;, or &amp;quot;we&amp;#x27;ll have to pay licensing to add IPv6 because we bought crap routers, so let&amp;#x27;s not&amp;quot;, et cetera.&lt;p&gt;My favorite is, &amp;quot;we have no record of people trying to use IPv6&amp;quot; - yes, that&amp;#x27;s real :D&lt;p&gt;It just shows their ignorance. Adding IPv6 has myriad advantages - no need for NAT, proxies or port forwards to share addresses, no need to renumber networks if allocations or upstream change, redundancy, valid security-through-obscurity (imagine port scanning a &amp;#x2F;64 looking for open ssh ports)...&lt;p&gt;What&amp;#x27;s really interesting is how many of these &amp;quot;we fear change&amp;quot; IT people don&amp;#x27;t realize they&amp;#x27;re already using IPv6 on their phones every day, with a majority of the sites they visit.</text></item></parent_chain><comment><author>tyingq</author><text>There&amp;#x27;s a fair amount of &amp;quot;who goes first&amp;quot; or &amp;quot;who sees that it works end-to-end&amp;quot;.  My personal experience has been several situations where some piece of software that doesn&amp;#x27;t work, or is slow, suddenly works when I disable ipv6.  That includes vpn client software I had to use for a job, dns configuration at another job, a mesh network for some hobby thing, etc.&lt;p&gt;Had I spent the time to dig into it, I&amp;#x27;m sure I&amp;#x27;d have found the issue.  And it probably wouldn&amp;#x27;t have been directly a true ipv6 problem. But I had more important things to deal with, so it moved to number 11 on my &amp;quot;top 10 list&amp;quot;.&lt;p&gt;I&amp;#x27;m guessing I&amp;#x27;m not alone in that.  So while individual teams and products might be working to support it, end users often see that it doesn&amp;#x27;t, because of some peripheral thing that&amp;#x27;s misconfigured, doesn&amp;#x27;t have support, etc.  So they give up, which reduces perceived demand.</text></comment>
<story><title>Reasons for servers to support IPv6</title><url>https://jvns.ca/blog/2022/01/29/reasons-for-servers-to-support-ipv6/</url></story><parent_chain><item><author>johnklos</author><text>It&amp;#x27;s good to wonder publicly and have a discussion!&lt;p&gt;I set up IPv6 on all my servers in 2001 and thought we&amp;#x27;d all be on IPv6 in just a couple of years :P&lt;p&gt;What&amp;#x27;s interesting is how much resistance there is to adding IPv6 which comes from entrenched IT. People who never learned (much) about IPv6 seem to be afraid of it and often respond with some variant or another of &amp;quot;don&amp;#x27;t fix it if it ain&amp;#x27;t broke&amp;quot;, or &amp;quot;it&amp;#x27;s extra work for no return&amp;quot;, or &amp;quot;we&amp;#x27;ll have to pay licensing to add IPv6 because we bought crap routers, so let&amp;#x27;s not&amp;quot;, et cetera.&lt;p&gt;My favorite is, &amp;quot;we have no record of people trying to use IPv6&amp;quot; - yes, that&amp;#x27;s real :D&lt;p&gt;It just shows their ignorance. Adding IPv6 has myriad advantages - no need for NAT, proxies or port forwards to share addresses, no need to renumber networks if allocations or upstream change, redundancy, valid security-through-obscurity (imagine port scanning a &amp;#x2F;64 looking for open ssh ports)...&lt;p&gt;What&amp;#x27;s really interesting is how many of these &amp;quot;we fear change&amp;quot; IT people don&amp;#x27;t realize they&amp;#x27;re already using IPv6 on their phones every day, with a majority of the sites they visit.</text></item></parent_chain><comment><author>zokier</author><text>&amp;gt; Adding IPv6 has myriad advantages - no need for NAT, proxies or port forwards to share addresses, no need to renumber networks if allocations or upstream change, redundancy, valid security-through-obscurity (imagine port scanning a &amp;#x2F;64 looking for open ssh ports)...&lt;p&gt;problem is that adding ipv6 gives none of those. Removing ipv4 would do so, but realistically most people are going to run dual-stack of some sort for a while, and as long as that is the case then adding ipv6 is mostly just additive effort.</text></comment>