git: DragonFly_RELEASE_6_4 net - Do not treat .0 addresses as broadcast by default

[Aaron LI]

commit 80cbe2e25b76b5ee77924ee0dd785471a37b2f69
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Mon Mar 3 21:17:11 2025 -0800

    net - Do not treat .0 addresses as broadcast by default
    
    * DFly still had very old code that treats all 0's within an IPV4 subnet
      as a broadcast address.  This behavior stopped being used many years
      ago.
    
    * Add the net.inet.ip.broadcast_lowest sysctl, default to 0, disabling
      the behavior and allowing .0 subnet addresses to be assigned to
      hosts.
    
    * Verified to fix the issue, same change was made in FreeBSD.
    
    Taken-from: FreeBSD
    Reported-by: Kyle Butt <kyle at iteratee.net>

Summary of changes:
 sys/netinet/in.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/80cbe2e25b76b5ee77924ee0dd785471a37b2f69


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