#1146785 radvd: Update to 2.21 for RFC 9762 Prefix Delegation support

Package:
radvd
Source:
radvd
Description:
Router Advertisement Daemon
Submitter:
Athanasius
Date:
2026-09-05 16:19:05 UTC
Severity:
normal
#1146785#5
Date:
2026-09-05 15:35:23 UTC
From:
To:
Dear Maintainer,

  In setting up DHCPv6-PD on my local network I discovered that the
Debian packaged version of radvd is too old (2.20) for RFC 9762 support.

  Specifically upstream commit 760c15f8b4b248867f47825f78b6292379cdea64
added a new configurationm flag "AdvDHCPv6PDPreferred" which is
necessary to signal to clients that they should ask the DHCPv6 service
for a Prefix Delegation.

  Version 2.21 was released 2026-05-25 with this change included.

  I grabbed the upstream source, copied in the current Debian `debian/`
directory and built the current HEAD (fbbacdcbd12f829453deb33ed50a5a49a3c42b05) without issues.  Works fine.