This will be useful to setup machines where we already have IPv6 (for
example, VM with IPv6 coming from the host).

As slapos is started by cron, this number will reach the default limit very fast

/reviewed-on !80

/cc @alain.takoudjou @rafael

/reviewed-on nexedi/slapos.package!79

  This release is same as 1.0.83.1 with the update of slapos.core

  Reference for the latest released package.

This reverts commit b598acb4

/reviewed-on nexedi/slapos.package!76

/reviewed-on nexedi/slapos.package!75

/reviewed-on nexedi/slapos.package!74

/reviewed-on nexedi/slapos.package!72

/reviewed-on nexedi/slapos.package!73

/reviewed-on nexedi/slapos.package!71

/reviewed-on nexedi/slapos.package!70

It is useful to bootstrap local development of SlapOS related works, which
shall not used SlapOS Master (eg. a lot of isntances)

/reviewed-on nexedi/slapos.package!69

This partially reverts commit dbc26026.

Despite of locally installing slapos.node in some cases, the repository is
required for other tasks (like installing re6st-node).

try to disable ipv6 default route configuration in servers when re6st is used.

/reviewed-on nexedi/slapos.package!62

/reviewed-on nexedi/slapos.package!68