You have been subscribed to a public bug by Kees Cook (kees):
Last week I changed our infrastructure so that our ~20 Ubuntu boxes can only be
managed with SSH via IPv6.
To do this I added "ListenAddress ::1" to sshd_config.
This seems to work fine on our 10.04LTS boxes (OpenSSH_5.3p1 Debian-3ubuntu),
but this configuration does not work on our 8.04LTS boxes: they are still
reachable via IPv4.
The same thing goes for "AddressFamiliy inet6", that options works on
10.04, but not on 8.04.
Classified as security bug, although I realise that probably not many
are affected by this.
** Affects: openssh (Ubuntu)
Importance: Undecided
Status: New
** Tags: ipv4 ipv6
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Impossible to disable IPv4
https://bugs.launchpad.net/bugs/713002
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