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(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)
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PR https://github.com/vyos/vyos-1x/pull/2540 backported a migration script from
current to the equuleus LTS branch. As migration scripts are executed in order
to adjust the CLI for necessary improvements in future LTS releases we need to
change the versioning of the migration files to match the new "base" version
from the previous LTS release.
In theory this could break very ancient 1.4 rolling releases (from the early
days of the OSPF refactoring) - but those versions are considered very much
unstable.
Now this is the last chance to sync up the migration scripts before the 1.4 LTS
release.
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The script's name is always provided as the first argument sys.argv[0]
Expected length for argv is 2 (script itself + config file)
Change: 'if (len(argv) < 1)' to 'if len(argv) < 2'
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present for DHCP
VyOS 1.4 still leverages PPPd internals on the CLI.
pppd supports three options for a default route, none, auto, force.
* none: No default route is installed on interface up
* auto: Default route is only installed if there is yet no default route
* force: overwrite any default route
There are several drawbacks in this design for VyOS and the users. If auto is
specified, this only counted for static default routes - but what about dynamic
ones? Same for force, only a static default route got replaced but dynamic ones
did not got taken into account.
The CLI is changed and we now re-use already existing nodes from the DHCP
interface configuration:
* no-default-route:
On link up no default route is installed, same as the previous
default-route none
* default-route-distance:
We can now specify the distance of this route for the routing table on the
system. This defaults to 210 as we have for DHCP interfaces. All this will be
migrated using a CLI migration script.
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