openswan VPN no longer works after upgrade to 20.04

[Tom Chiverton]

#nmcli con up 6cff80a9-24e9-4b19-89f1-1324ef966ceb
Error: Connection activation failed: The VPN service 'org.freedesktop.NetworkManager.openswan' was not installed.

#dpkg -l|grep -i swan
ii libcharon-extauth-plugins 5.8.2-1ubuntu3 amd64 strongSwan charon library (extended authentication plugins)
ii libstrongswan 5.8.2-1ubuntu3 amd64 strongSwan utility and crypto library
ii libstrongswan-standard-plugins 5.8.2-1ubuntu3 amd64 strongSwan utility and crypto library (standard plugins)
ii network-manager-strongswan 1.4.5-2.1 amd64 network management framework (strongSwan plugin)
ii strongswan-libcharon 5.8.2-1ubuntu3 amd64 strongSwan charon library
ii strongswan-nm 5.8.2-1ubuntu3 amd64 strongSwan plugin to interact with NetworkManager

Where has the openswan plugin gone ? It's still an option in nm-applet

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: network-manager 1.22.10-1ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Thu Apr 23 08:39:32 2020
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
IpRoute:
 default via 192.168.11.1 dev wlan0 proto dhcp metric 600
 169.254.0.0/16 dev wlan0 scope link metric 1000
 192.168.11.0/24 dev wlan0 proto kernel scope link src 192.168.11.50 metric 600
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.NetworkManager.conf.d.default-wifi-powersave-on.conf:
 [connection]
 wifi.powersave = 2
mtime.conffile..etc.NetworkManager.conf.d.default-wifi-powersave-on.conf: 2017-10-16T20:52:50.502869
nmcli-nm:
 RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
 running 1.22.10 connected started full enabled enabled enabled enabled enabled