git: b7be927df5 - main - 13.1 relnotes: Add note about IPv4 lowest-address broadcast change.

The branch main has been updated by karels (src committer):

URL: https://cgit.FreeBSD.org/doc/commit/?id=b7be927df51965faffa8012a2f19ac7843ccd1c0

commit b7be927df51965faffa8012a2f19ac7843ccd1c0
Author:     Mike Karels <karels@FreeBSD.org>
AuthorDate: 2022-04-06 13:12:55 +0000
Commit:     Mike Karels <karels@FreeBSD.org>
CommitDate: 2022-04-06 13:12:55 +0000

    13.1 relnotes: Add note about IPv4 lowest-address broadcast change.
    
    Document change for lowest address / host 0.
    
    Reviewed by: gjb, pauamma_gundo.com
    Approved by: re (gjb)
    Differential Revision: https://reviews.freebsd.org/D34788
---
 website/content/en/releases/13.1R/relnotes.adoc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/website/content/en/releases/13.1R/relnotes.adoc b/website/content/en/releases/13.1R/relnotes.adoc
index c9d0625fac..ef5dc916ee 100644
--- a/website/content/en/releases/13.1R/relnotes.adoc
+++ b/website/content/en/releases/13.1R/relnotes.adoc
@@ -172,6 +172,7 @@ This section describes changes that affect networking in FreeBSD.
 [[network-general]]
 === General Network
 
+The handling of the lowest address on an IPv4 (sub)net (host 0) has been changed so that packets are not sent as a broadcast unless this address has been set as the broadcast address. This makes the lowest address usable for a host. The old behavior can be restored with the `net.inet.ip.broadcast_lowest` sysctl. See https://datatracker.ietf.org/doc/draft-schoen-intarea-unicast-lowest-address/[https://datatracker.ietf.org/doc/draft-schoen-intarea-unicast-lowest-address/] for background information. gitref:3ee882bf21af[repository=src]
 
 [[future-releases]]
 == General Notes Regarding Future FreeBSD Releases