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content/u/blog/DRAFT-what-is-wrong-with-ipv4/contents.lr

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+title: What is wrong with IPv4?
+---
+pub_date: 2019-10-01
+---
+author: Nico Schottelius
+---
+twitter_handle: NicoSchottelius
+---
+_hidden: yes
+---
+_discoverable: no
+---
+abstract:
+Why are people talking about moving to IPv6?
+What is wrong with running application on IPv4?
+---
+body:
+
+## TL;DR
+
+Nothing is wrong with IPv4. There is just too less of it.
+
+## IPv6 vs. IPv4 for end users
+
+At home
+Not big difference at the moment
+But: big potential for independence
+
+### Example: home automation
+
+All devices talk to a vendor
+
+You already have a bridge. Why sending data elsewhere?
+
+If enough IPv4: give all devices a public address. Can directly
+connect to your home bridge. But you can't. NAT.
+
+## IPv6 vs. IPv4 for developers
+
+This is the section I like most. Forums with posts from developers who
+recommend to turn off IPv6, to ignore it, complain about the new
+format.
+All of these are valid points. IPv6 is an additional protocol that
+applications need to handle.
+
+New apps: develop IPv6 only.
+
+
+
+## IPv6 vs. IPv4 for ISPs
+
+- SKT
+- Multiple NATs
+- Need to run IPv6 anyway to provide reachability
+- Easier to run end point NAT64
+
+
+## IPv6 vs. IPv4 for cloud providers
+
+Probably highest pressure for IPv4 users is on cloud
+
+
+## Other applications
+
+If you know about other applications or want to enhance one of our
+configuration, we invite you to join the [IPv6
+chat](https://IPv6.chat) or [write to us on
+Twitter](https://twitter.com/ungleich).