Originally created by @rayzchen on GitHub (Mar 19, 2022).
The RFC 2119 link at https://semver.org/spec/v2.0.0-rc.2.html#semantic-versioning-specification-semver links to http://tools.ietf.org/html/rfc2119 which gives:

@dkg commented on GitHub (Mar 29, 2022):
I recommend using https://datatracker.ietf.org/doc/html/rfc2119 or [BCP14](https://www.rfc-editor.org/info/bcp14) which also includes the disambiguation in [RFC 8174](https://datatracker.ietf.org/doc/html/rfc8174/), which is applicable to the semver document.
@RoystonS commented on GitHub (May 2, 2022):
The original http://tools.ietf.org/html/rfc2119 link which was reported as broken is now working, and automatically redirects to https://datatracker.ietf.org/doc/html/rfc2119.
The redirect works only for HTTPS, and not HTTP. semver.md was already corrected with 6a1d691c2c
@ralphie79 commented on GitHub (Jun 16, 2022):
> The original http://tools.ietf.org/html/rfc2119 link which was reported as broken is now working, and automatically redirects to https://datatracker.ietf.org/doc/html/rfc2119.
The redirect works only for HTTPS, and not HTTP.
[semver.md](https://github.com/semver/semver/blob/master/semver.md) was already corrected with 6a1d691c2c3cb699a755e7d00037ed4b518cb4b4
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Originally created by @rayzchen on GitHub (Mar 19, 2022).
The RFC 2119 link at https://semver.org/spec/v2.0.0-rc.2.html#semantic-versioning-specification-semver links to http://tools.ietf.org/html/rfc2119 which gives:
@bfernand commented on GitHub (Mar 29, 2022):
The correct link is: https://www.ietf.org/rfc/rfc2119.txt
@dkg commented on GitHub (Mar 29, 2022):
I recommend using https://datatracker.ietf.org/doc/html/rfc2119 or BCP14 which also includes the disambiguation in RFC 8174, which is applicable to the semver document.
@RoystonS commented on GitHub (May 2, 2022):
The original http://tools.ietf.org/html/rfc2119 link which was reported as broken is now working, and automatically redirects to https://datatracker.ietf.org/doc/html/rfc2119.
@ralphie79 commented on GitHub (Jun 16, 2022):
The redirect works only for HTTPS, and not HTTP.
semver.md was already corrected with
6a1d691c2c