Some Linux clients cannot connect

[SJ-Y054]

Checklist

• [x] I searched existing Issues, and did not find a similar enhancement request
• [x] This enhancement request is about the IPsec VPN server Docker image, and not IPsec VPN itself
• [x] I read the README
• [x] I read the Important notes
• [x] I followed instructions to configure VPN clients
• [x] I checked IKEv1 troubleshooting, IKEv2 troubleshooting, enabled logs and checked VPN status

Describe the enhancement request A clear and concise description of your enhancement request.

When some Linux clients connect this server with IPsec/IKEv2, they can't connect and leaves ANY logs. I think it is because this: https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md#linux In that link, in order to connect linux clients to this server, the server side /etc/ipsec.d/ikev2 need to changed: adding authby=rsa-sha1 in conn ikev2-cp section. But, in docker environment, though I edit the file, the change does not persist after restart of the container. I think some env config is need to change that config.

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Additional context Add any other context about the enhancement request here.

[hwdsl2]

@SJ-Y054 Hello! Changes to /etc/ipsec.d/ikev2.conf are normally NOT overwritten on container restart. Please start a Bash shell inside the container, then follow instructions to add authby=rsa-sha1 in conn ikev2-cp section of /etc/ipsec.d/ikev2.conf. After that you can either restart the container or restart the IPsec service (reference).