# Release Announcement for v8.15

**URL:** https://racket.discourse.group/t/release-announcement-for-v8-15/3278
**Category:** Internals
**Tags:** release-management
**Created:** [October 29, 2024, 5:34am UTC](https://racket.discourse.group/t/release-announcement-for-v8-15/3278 "2024-10-29T05:34:09Z")
**Posts on this page:** 1
**Showing post:** 21

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### Author: ![shhyou](https://avatars.discourse-cdn.com/v4/letter/s/ccd318/32.png) [@shhyou](https://racket.discourse.group/u/shhyou)
#### Post date: [November 5, 2024, 9:08pm UTC](https://racket.discourse.group/t/release-announcement-for-v8-15/3278/21 "2024-11-05T21:08:02Z")

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> [@jbclements](#):
>
> - Well, I do see that a general "many bugs are fixed" message is missing, I've added that. Do you think that this bug is particularly notable?

Maybe @spdegabrielle remember more from the post [https://racket.discourse.group/t/trying-out-raco-demod/3207](https://racket.discourse.group/t/trying-out-raco-demod/3207). My impression is that the basic program with `(module main)` in his Raco Demod+Exe experiment fails, so this is a Raco Demod + Raco Exe usability fix that affects any program with `(module main)` ([https://github.com/racket/racket/commit/18a43be5edccee9a228f8635648d24b497690ec9#diff-f5712232994bb2308bea158d27074fe294b80895af059333b876d96ee55cb484](https://github.com/racket/racket/commit/18a43be5edccee9a228f8635648d24b497690ec9#diff-f5712232994bb2308bea158d27074fe294b80895af059333b876d96ee55cb484)).

> [@jbclements](#):
>
> - Took your suggestion. Just to check: have you read the docs for these flags, to ensure this is a reasonable summary?

Yes and hopefully I understand the docs right! The docs are pasted below. On the other hand, the commit you referenced is a direct respond to the fix of the IPv4-fallback issue in [https://racket.discourse.group/t/ipv6-fallback-to-ipv4/1039/4](https://racket.discourse.group/t/ipv6-fallback-to-ipv4/1039/4).

> 144: If hints.ai\_flags specifies the AI\_V4MAPPED flag, and hints.ai\_family was specified as AF\_INET6,  
> 145- and no matching IPv6 addresses could be found, then return IPv4-mapped IPv6 addresses in the  
> 146: list pointed to by res. If both AI\_V4MAPPED and AI\_ALL are specified in hints.ai\_flags, then  
> 147- return both IPv6 and IPv4-mapped IPv6 addresses in the list pointed to by res. AI\_ALL is ig‐  
> 148: nored if AI\_V4MAPPED is not also specified.

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