Same question, , on Linux, outer tunnel should be OpenVPN, inner tunnel should be IPSEC by vpnc. vpnc is failing.
I'm quite sure it's because of the MTUs.
The only way I got it working: An Android device doing wireless client and also access point, establishing the OpenVPN and sharing via access point. The Linux machines wifi interface set to MTU 1200, then doing vpnc.
I tried doing the same one the Linux client only. First establishing the OpenVPN, then starting vpnc with --ifmtu 1200. First it connects and I'm able to ping clients behind, but soon after it stops working withThe difference is, that only the tun interface gets MTU 1200. Before when using the Android device as router, I can set the physical interface to MTU 1200. Any idea how to achieve that on the Linux machine only?
I'm quite sure it's because of the MTUs.
The only way I got it working: An Android device doing wireless client and also access point, establishing the OpenVPN and sharing via access point. The Linux machines wifi interface set to MTU 1200, then doing vpnc.
I tried doing the same one the Linux client only. First establishing the OpenVPN, then starting vpnc with --ifmtu 1200. First it connects and I'm able to ping clients behind, but soon after it stops working with
Code:
vpnc: quick mode response rejected: (ISAKMP_N_INVALID_MESSAGE_ID)(9)Statistics: Posted by mttc — Thu Jul 18, 2024 8:27 am