Unfortunately I don't know. I would recommend commenting on the bug in order to let upstream know that more people are affected by this problem. You can try posting your reproduction instructions there, and provide more information if upstream needs it.
I am marking this bug as Triaged, although I have not reproduced it myself. ** Changed in: network-manager (Ubuntu) Status: Incomplete => Triaged ** Changed in: openvpn (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1917887 Title: Network Manager OpenVPN nested connections fail to setup routes correctly Status in OpenVPN: Unknown Status in network-manager package in Ubuntu: Triaged Status in openvpn package in Ubuntu: Invalid Bug description: Setup: Host lan: 192.168.0.238/24 Host Default gw: 192.168.0.1 ip route: default via 192.168.0.1 dev eno1 proto dhcp metric 100 169.254.0.0/16 dev eno1 scope link metric 1000 192.168.0.0/24 dev eno1 proto kernel scope link src 192.168.0.238 metric 100 Primary OpenVPN (check "Use this connection only for resources on its network"): server ip: public a.b.c.d OpenVPN Tunnel: 192.168.1.0/24 routes pushed: 192.168.100.0/24 First VPN works OK: default via 192.168.0.1 dev eno1 proto dhcp metric 100 169.254.0.0/16 dev eno1 scope link metric 1000 192.168.0.0/24 dev eno1 proto kernel scope link src 192.168.0.238 metric 100 192.168.0.1 dev eno1 proto static scope link metric 100 192.168.100.0/24 via 192.168.10.1 dev tun0 proto static metric 50 a.b.c.d via 192.168.0.1 dev eno1 proto static metric 100 Secondary OpenVPN (check "Use this connection only for resources on its network"): server ip: private 192.168.100.10 OpenVPN Tunnel: 192.168.20.0/24 routes pushed: 192.168.200.0/24 Second VPN Connect OK, routing table is wrong: default via 192.168.0.1 dev eno1 proto dhcp metric 100 192.168.200.0/24 via 192.168.20.1 dev tun1 192.168.20.0/24 dev tun1 proto kernel scope link src 192.168.20.59 169.254.0.0/16 dev eno1 scope link metric 1000 192.168.0.0/24 dev eno1 proto kernel scope link src 192.168.0.238 metric 100 192.168.0.1 dev eno1 proto static scope link metric 100 192.168.100.0/24 via 192.168.10.1 dev tun0 proto static metric 50 a.b.c.d via 192.168.0.1 dev eno1 proto static metric 100 192.168.100.10 via 192.168.0.1 dev eno1 proto static metric 100 <- this is wrong, the openVPN#2 Gateway is not on the local lan Correct routing table using "sudo /usr/sbin/openvpn /path/to/config.openvpn" (same a Network Manager) default via 192.168.0.1 dev eno1 proto dhcp metric 100 192.168.200.0/24 via 192.168.20.1 dev tun1 192.168.20.0/24 dev tun1 proto kernel scope link src 192.168.20.59 169.254.0.0/16 dev eno1 scope link metric 1000 192.168.0.0/24 dev eno1 proto kernel scope link src 192.168.0.238 metric 100 192.168.0.1 dev eno1 proto static scope link metric 100 192.168.100.0/24 via 192.168.10.1 dev tun0 proto static metric 50 a.b.c.d via 192.168.0.1 dev eno1 proto static metric 100 It seems that Network Manager add a wrong additional route not added by the openvpn bin: 192.168.100.10 via 192.168.0.1 dev eno1 proto static metric 100 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: openvpn 2.4.7-1ubuntu2 ProcVersionSignature: Ubuntu 5.8.0-44.50~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-44-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.16 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Fri Mar 5 12:44:39 2021 InstallationDate: Installed on 2021-02-19 (13 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=it_IT.UTF-8 SHELL=/bin/bash SourcePackage: openvpn UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/openvpn/+bug/1917887/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp