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<pre>Johannes,<br /><br />I've read your blog post and i fully agree that DNS changes (dynamic DNS) and dynamic IPv6 allocation for LAN (DHCP-PD) is a big issue.<br />Couple of years ago i addressed this issue and came up with a personal solution (you can test it and use it for free if you want).<br />https://www.duiadns.net/ipv6-for-lan-feature<br /><br />regards,<br />--
Liviu P.</pre>
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<p>On 2015-12-16 11:33, Johannes Weber wrote:</p>
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<p>Hello ipv6-ops,<br /><br />what are your experiences with dynamic IPv6 prefixes? Here in Germany, several ISPs only offer dynamic /56 prefixes that change after a router reboot. Of course, for "normal" end-users this is not a problem. But for companies having several remote offices behind such ISP lines, this is a problem. (And of course, for me as a network guy, too. ;))<br />I encounter several problems with this type of dynamic prefixes and summarized them here:<br /><a href="http://blog.webernetz.net/2015/10/27/ipv6-dyn-prefix-problems/">http://blog.webernetz.net/2015/10/27/ipv6-dyn-prefix-problems/</a></p>
<p>1) Many DNS changes for services behind the dyn prefix (not all devices are able to update DNS records)<br />2) Security policies with DynDNS ranges (how to allow a dyn IPv6-range in other firewall policies?)<br />3) Routing inside IPv6 VPN tunnels (solved with OSPFv3, but maybe not optimal?)<br /><br />I am highly interested in others experience about dynamic prefixes. How do you solve these problems, e.g., when a company has several remote offices with dynamic prefixes?<br /><br />Thanks,<br /><br />Johannes</p>
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<p><span style="font-family: courier new,courier,monospace;">Johannes Weber</span><br /><span style="font-family: courier new,courier,monospace;"> mail: <a href="mailto:johannes@webernetz.net" rel="noreferrer">johannes@webernetz.net</a></span><br /><span style="font-family: courier new,courier,monospace;"> mobile: +49 174 1880211</span><br /><br /><span style="font-family: courier new,courier,monospace;"> blog: <a href="http://blog.webernetz.net" rel="noreferrer">http://blog.webernetz.net</a></span><br /><span style="font-family: courier new,courier,monospace;"> twitter: <a href="https://twitter.com/webernetz" rel="noreferrer">https://twitter.com/webernetz</a></span></p>
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