connect interface <ifname> and disconnect interface <ifname> cannot be combined to restart a dialer interface (PPPoE or WWAN) when the CLI session runs over that very interface: the link drops in between, the session dies, and the second command is never issued - the router stays offline.

reset connection <ifname> was meant to cover this, but runs in the foreground. SIGHUP from the dying session, or SIGPIPE on the next write to the dead terminal, kills it between hang-up and redial. reset connection is therefore replaced by reconnect interface, matching the existing connect and disconnect top-level nodes.

The reconnect now runs in a transient systemd unit, so it survives the loss of the calling session; progress is logged to the journal. PPPoE and SSTP restart the ppp service in a single operation rather than stopping and starting it, WWAN still disconnects the modem before redialing.

A /reconnect REST endpoint replaces the reset connection path, previously reachable through POST /reset.

Breaking change: reset connection is removed, no alias is kept, thus this should serve as addition in VyOS 1.5.2 to the current reset connection CLI command and should change in rolling/1.6 scutum