Openssh on ipv6 only jail

[Frank de Bot]

Bjoern A. Zeeb wrote:
> 
>> On 04 Nov 2015, at 21:18 , Frank de Bot (lists) <lists at searchy.net> wrote:
>>
>> Hi,
>>
>> I've a jail setup with only ipv6. I want to use openssh as ssh daemon.
>> When ssh to the jail, it ask for password, accepts it shows motd and
>> then everything freezes. I also get a shell line like '[searchy at ipv6only
>> ~]$ '. The client isn't even able to use key sequences like ~. to
>> terminate. Only when sshd processes are killed on the server, the
>> connection is released, everything I tried to send over ssh, is now in
>> my local terminal
>>
>> I've found out that this behaviour isn't occuring when I set up the jail
>> with ipv4 too. Even when openssh is only listening on ipv6, there is no
>> problem.
>>
>> My jail config is:
>>
>> ipv6only {
>>        host.hostname = "ipv6only";
>> #       ip4.addr = x.x.x.224;
>>        ip6.addr = x:x:x:4::7;
>>        path = "/opt/jails/ipv6only";
>> }
>>
>> what can cause it hang so badly when using only ipv6? there is no
>> difference between shells.
> 
> 
> ports might not be the best list.  I have been running IPv6-only jails for years and I have IPv6-only VMs.
> 
> Just to clarify, what version of FreeBSD base system,  what version of world for the jail, and which version of openssh do you have?
> 
> /bz

Because the sshd that comes with the base is working fine, I tought it
could be a problem with the port itself.

The openssh version is: OpenSSH_7.1p1, OpenSSL 1.0.1p-freebsd 9 Jul 2015

The base system is build from source Revision 287954



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