# 🆕 ✍️ Blog: Session IP address pinning for dual stack IPv6

**URL:** <https://forum.buildkite.community/t/blog-session-ip-address-pinning-for-dual-stack-ipv6/3485>\
**Category:** Announcements\
**Created:** [January 11, 2024, 12:57am UTC](https://forum.buildkite.community/t/blog-session-ip-address-pinning-for-dual-stack-ipv6/3485 "2024-01-11T00:57:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Mel](https://avatars.discourse-cdn.com/v4/letter/m/da6949/32.png) [@Mel](https://forum.buildkite.community/u/Mel)\
**Post date:** [January 11, 2024, 12:57am UTC](https://forum.buildkite.community/t/blog-session-ip-address-pinning-for-dual-stack-ipv6/3485/1 "2024-01-11T00:57:50Z")

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Last year we released Session IP address pinning, and noticed that resulted in dual-stack users needing to re-authenticate far too often. 😓

We’ve learned a lot about issues with how browsers handle IPv4/IPv6 dual-stack DNS lookup and connections, and have a couple of proposed solutions.

[https://buildkite.com/blog/session-ip-address-pinning-for-dual-stack-ipv6](https://buildkite.com/blog/session-ip-address-pinning-for-dual-stack-ipv6)