Workaround available here https://askubuntu.com/questions/1403896/cant-add-cisco-compatible-vpn-vpnc-on-network-manager-ubuntu-22-04/1404609#1404609
Workaround available here /askubuntu. com/questions/ 1403896/ cant-add- cisco-compatibl e-vpn-vpnc- on-network- manager- ubuntu- 22-04/1404609# 1404609
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