https://github.com/vyos/vyos-1x/pull/5451

Regarding (1) above: form-POST requests are preprocessed by overriding the route handler before delivery to the endpoint, hence managed by background operations as any JSON formatted request. Regarding (2), thanks for the offer to open a separate task; that would be helpful.

We hit a related but possibly distinct failure on VyOS 1.5 Circinus rolling (2026-07-06) and would like to confirm the scope of the background-operations fix (https://github.com/vyos/vyos-1x/pull/4953):

PR: https://github.com/vyos/vyos-1x/pull/5152

This task was accidentally closed as a duplicate, but it is not.

This problem is fixed by @jestabro's atomic config write.

The PR that adds background operations is now merged so I suppose we can close the task.

PR https://github.com/vyos/vyos-build/pull/1136

Slack thread: https://vyos-community.slack.com/archives/C01A6CJFW1F/p1772870460509399

PR: https://github.com/vyos/vyos-1x/pull/5027

PR https://github.com/vyos/vyos-build/pull/1133

Regression added via https://github.com/vyos/vyos-1x/pull/2353/changes

PR:
https://github.com/vyos/vyos-1x/pull/4999

The location of config data, and the definition of the bind mount /config , has been normalized for all versions > 1.4.4. This affects updates from 1.3.8 as a result of the definition in the older image tools:
https://github.com/vyos/vyatta-cfg-system/blob/equuleus/scripts/install/install-functions#L44
On a live 1.3.8 system, one can edit the line in
/opt/vyatta/sbin/install-functions
to
VYATTA_NEW_CFG_DIR=/opt/vyatta/etc/config
which will correct the problem.