--with-ipv4-default and sshd IPv4/6 dual bind hack

Pekka Savola pekkas at netcore.fi
Mon Mar 5 19:10:09 EST 2001

On Mon, 5 Mar 2001, Pekka Savola wrote:

> Hello all,
> I just found a bug a nice bug that can be turned into a real feature on
> systems (usually Linux) that are built with --with-ipv4-default.
> If you enable IPv6 in kernel, and enable both listenaddress and
> ::, sshd will error out 'address family not supported'.
> However, you can work around this error by starting sshd with 'sshd -4 -6'.
> As far as man page is concerned, I'm getting the impression that you
> should be able to use only  -4 or -6, not both.

Please disregard "the hack".  It doesn't work after all.  My eyes betrayed
me and I wasn't caffeinated. :-)

Still, it would be very nice to get sshd to bind to both address families
with ipv4-default.

Pekka Savola                  "Tell me of difficulties surmounted,
Netcore Oy                    not those you stumble over and fall"
Systems. Networks. Security.   -- Robert Jordan: A Crown of Swords

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