# IPv6 is hard

**URL:** <https://forum.devtalk.com/t/ipv6-is-hard/188443>\
**Category:** In The News\
**Tags:** via-news-bot, ipv6\
**Created:** [21 February 2025 13:34 UTC](https://forum.devtalk.com/t/ipv6-is-hard/188443 "2025-02-21T13:34:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![CommunityNews](https://forum.devtalk.com/user_avatar/forum.devtalk.com/communitynews/32/1113_2.png) [@CommunityNews](https://forum.devtalk.com/u/CommunityNews)\
**Post date:** [21 February 2025 13:34 UTC](https://forum.devtalk.com/t/ipv6-is-hard/188443/1 "2025-02-21T13:34:39Z")

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> IPv6 is hard.  
> Yesterday I read this toot (German) over on mastodon which starts with “IPv6 is hard.”  
> No it’s not. It’s different.  
> I ran across this multiple times: There is an A and an AAAA-record for a FQDN, but the web server is only reachable via IPv4. You can easily test this with curl  
> $ curl -4 [https://github.com](https://github.com) -o /dev/null % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 273k 0 273k 0 0 3417k 0 --:–:-- --:–:-- --:–:-- 3553k $ curl -6 [https://github](https://github).

Read in full here:

> **[IPv6 is hard](https://techlog.jenslink.net/posts/ipv6-is-hard/)**
>
> Yesterday I read this toot (German) over on mastodon which starts with “IPv6 is hard.”
> No it’s not. It’s different.
> I ran across this multiple times: There is an A and an AAAA-record for a FQDN, but the web server is only reachable via IPv4. You can...

_This thread was posted by one of our members via one of our news source trackers._

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<div class="post-metadata">

**Author:** ![KnowledgeIsPower](https://forum.devtalk.com/letter_avatar_proxy/v4/letter/k/c6cbf5/32.png) [@KnowledgeIsPower](https://forum.devtalk.com/u/KnowledgeIsPower)\
**Post date:** [22 February 2025 01:21 UTC](https://forum.devtalk.com/t/ipv6-is-hard/188443/2 "2025-02-22T01:21:23Z")

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My problem with ipv6 is their ip addressing notation, they are not decimal.