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Date:      Tue, 2 Jul 2024 13:10:44 -0700
From:      Craig Leres <leres@freebsd.org>
To:        Ronald Klop <ronald-lists@klop.ws>
Cc:        freebsd-stable@freebsd.org, Michael Proto <mike@jellydonut.org>
Subject:   Re: FreeBSD 14.x localhost source address
Message-ID:  <b04a8ff3-5e4e-4eaa-a144-2dd0500b99bb@freebsd.org>
In-Reply-To: <1298289263.3566.1719909620825@localhost>
References:  <086405e2-8fc2-4463-b8bb-d6c652745ae1@freebsd.org> <CAGAnWo2LbT6mGdgo7u5CA6d%2BQE8bX9nJagaHMn5p=3DBsC0fOg@mail.gmail.com> <7005d0ed-70ea-4c70-ac61-2a12e023cdd7@freebsd.org> <1298289263.3566.1719909620825@localhost>

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On 7/2/24 01:40, Ronald Klop wrote:
> Could it be that this mail thread also applies to your situation?
> https://lists.freebsd.org/archives/freebsd-current/2024-June/006047.html 
> <https://lists.freebsd.org/archives/freebsd-current/2024-June/006047.html>;
> 
> It has a follow-up about a fix in 
> https://lists.freebsd.org/archives/freebsd-current/2024-June/006075.html 
> <https://lists.freebsd.org/archives/freebsd-current/2024-June/006075.html>.

It's very likely. I booted a 13.3 test system and a maskless lo2 ends up 
being /8:

     sea 3 # ifconfig lo2 create 127.0.0.2
     sea 4 # ifconfig lo2
     lo2: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
             options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
             inet 127.0.0.2 netmask 0xff000000
             inet6 fe80::1%lo2 prefixlen 64 scopeid 0x4
             groups: lo
             nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

while 14.1 (incorrectly) results in a /24.

		Craig



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