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2021-12-08 17:00:42.111 OpenVPN Session 55 (120.18.99.195:2001 -> 192.168.4.36:1194) Channel 0: Option Strings Received: "V4,dev-type tun,link-mtu 1557,tun-mtu 1500,proto UDPv4,cipher AES-128-CBC,auth SHA1,keysize 128,key-method 2,tls-client"
2021-12-08 17:00:42.111 OpenVPN Session 55 (120.18.99.195:2001 -> 192.168.4.36:1194) Channel 0: Client certificate is not provided, will use password authentication.
2021-12-08 17:00:42.111 OpenVPN Session 55 (120.18.99.195:2001 -> 192.168.4.36:1194) Channel 0: Option Strings to Send: "V4,dev-type tun,link-mtu 1557,tun-mtu 1500,proto UDPv4,cipher AES-128-CBC,auth SHA1,keysize 128,key-method 2,tls-server"
2021-12-08 17:00:42.795 On the TCP Listener (Port 0), a Client (IP address 120.18.99.195, Host name "120.18.99.195", Port number 2001) has connected.
2021-12-08 17:00:42.795 For the client (IP address: 120.18.99.195, host name: "120.18.99.195", port number: 2001), connection "CID-24-EBA1C6B05A" has been created.
2021-12-08 17:00:42.795 SSL communication for connection "CID-24-EBA1C6B05A" has been started. The encryption algorithm name is "(null)".
2021-12-08 17:00:42.797 [HUB "my-vpn"] The connection "CID-24-EBA1C6B05A" (IP address: 120.18.99.195, Host name: 120.18.99.195, Port number: 2001, Client name: "OpenVPN Client", Version: 4.38, Build: 9760) is attempting to connect to the Virtual Hub. The auth type provided is "External server authentication" and the user name is "username".
2021-12-08 17:00:42.797 [HUB "my-vpn"] Connection "CID-24-EBA1C6B05A": Successfully authenticated as user "username".
2021-12-08 17:00:42.797 [HUB "my-vpn"] Connection "CID-24-EBA1C6B05A": The new session "SID-username-[OPENVPN_L3]-25" has been created. (IP address: 120.18.99.195, Port number: 2001, Physical underlying protocol: "Legacy VPN - OPENVPN_L3")
2021-12-08 17:00:42.798 [HUB "my-vpn"] Session "SID-username-[OPENVPN_L3]-25": The parameter has been set. Max number of TCP connections: 1, Use of encryption: Yes, Use of compression: No, Use of Half duplex communication: No, Timeout: 20 seconds.
2021-12-08 17:00:42.800 [HUB "my-vpn"] Session "SID-username-[OPENVPN_L3]-25": VPN Client details: (Client product name: "OpenVPN Client", Client version: 438, Client build number: 9760, Server product name: "SoftEther VPN Server (64 bit)", Server version: 438, Server build number: 9760, Client OS name: "OpenVPN Client", Client OS version: "-", Client product ID: "-", Client host name: "", Client IP address: "120.18.99.195", Client port number: 2001, Server host name: "192.168.4.36", Server IP address: "192.168.4.36", Server port number: 1194, Proxy host name: "", Proxy IP address: "0.0.0.0", Proxy port number: 0, Virtual Hub name: "my-vpn", Client unique ID: "E467DB37CF32A1D57E5033B3E30F1EB7")
2021-12-08 17:00:55.166 [HUB "my-vpn"] Session "SID-username-[OPENVPN_L3]-25": The session has been terminated. The statistical information is as follows: Total outgoing data size: 23248 bytes, Total incoming data size: 35114 bytes.
2021-12-08 17:00:55.166 OpenVPN Session 55 (120.18.99.195:2001 -> 192.168.4.36:1194) Channel 0: Acquiring an IP address from the DHCP server failed. To accept a PPP session, you need to have a DHCP server. Make sure that a DHCP server is working normally in the Ethernet segment which the Virtual Hub belongs to. If you do not have a DHCP server, you can use the Virtual DHCP function of the SecureNAT on the Virtual Hub instead.
2021-12-08 17:00:55.166 OpenVPN Session 55 (120.18.99.195:2001 -> 192.168.4.36:1194) Channel 0: Failed to connect a channel.
2021-12-08 17:00:55.205 Connection "CID-24-EBA1C6B05A" terminated by the cause "The VPN session has been deleted. It is possible that either the administrator disconnected the session or the connection from the client to the VPN Server has been disconnected." (code 11).
2021-12-08 17:00:55.205 Connection "CID-24-EBA1C6B05A" has been terminated.
2021-12-08 17:00:55.205 The connection with the client (IP address 120.18.99.195, Port number 2001) has been disconnected.
Does anyone know what could be causing SoftEther to not be able to get an IP via DHCP, after a certain amount of time of the VPN being up?
Note: I have Hyper-V server running on my PC, and my SoftEther local bridge is bound to a Hyper-V virtual switch. My wi-fi adapter is part of a Windows network bridge due to Hyper-V network configuration (which means the physical wi-fi adapter itself doesn't show up in SoftEther because it's part of a bridge). I found that I need to bind my SoftEther local bridge to my Hyper-V virtual switch to get the VPN to work. Setting the local bridge binding to the Windows network bridge interface didn't allow VPN clients to connect.