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Date:      15 Feb 2023 16:45:19 -0500
From:      "John Levine" <johnl@iecc.com>
To:        freebsd-questions@freebsd.org
Cc:        possessor.assizer305@aceecat.org
Subject:   Re: Source IP selection
Message-ID:  <20230215214519.C9CC199766DF@ary.qy>
In-Reply-To: <20230215174535.jlxuis3xwhxee3bq@beesty.loosely.org>

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It appears that Ian Zimmerman <possessor.assizer305@aceecat.org> said:
>Hello,
>how is the source IP address selected for an unbound socket, if there
>are multiple addresses (ie. aliases) configured on the outgoing
>interface? I am interested in particular in the UDP case, ie.
>the sendto() syscall.
>This is almost the question at the following link but ... not about
>THAT kernel but FreeBSD.
>
>https://stackoverflow.com/questions/63955841/how-does-tcp-ip-select-a-source-ip-address

Same answer, use bind() if you want to bind to a specific address.

R's,
John



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