openssh and linux ipv6

[Pekka Savola]

On Wed, 14 Mar 2001, Markus Friedl wrote:

> hi, is anyone using  IPv6+linux?  -m
>
> On Wed, Mar 14, 2001 at 10:59:09AM +0100, José M. Fandiño wrote:
> > Dear friends,
> >
> >   I'm getting a system freeze when I use a linux ipv6 capable kernel.
> >
> > My configuration is a linux kernel-2.2.18 with ipv6
> > as module(suse 6.4), openssl 0.9.5 and Openssh-2.5.1p2,
> > with a default sshd_config file.
> >
> > I installed openssh with this line
> > ./configure  --prefix=/usr --with-cflags='-L/usr/X11R6/lib -L/usr/local/ssl'
> > --without-pam --with-ipv4-default --without-4in6 --sysconfdir=/etc/ssh
> > --disable-suid-ssh  && make && make install
> >
> > localhost in /etc/hosts looks like this:
> > 127.0.0.1	localhost
> > ::1		localhost ipv6-localhost ipv6-loopback
> >
> > then I do a "telnet localhost 22" and see the text
> > Trying ::1...
> > and the system is totally stopped and only a reboot is possible.
> >
> > I'm not sure that this is a linux kernel specific bug or it affects to
> > openssh in any way. If not excuse me by waste your time.

I haven't had problems with kernel freezes, linux and openssh.  Using 2.4
kernel, 2.5.1p2, RHL7.  Does 'stracing' sshd telnet/sshd process give
hints where this might halt?

You can't get sshd to bind to both '0.0.0.0' and '::' on port 22 though,
which can be quite annoying.

-- 
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