当我使用 ipv4 连接到我的服务器时，无论是否使用 DNS，或者通过没有 DNS 的 ipv6，连接都顺利完成。
但是，当我使用 DNS 和 ipv6 时，在横幅消息之后，Mobaxterm 冻结并且在我访问 shell 之前几秒钟没有响应。 但是，在 Powershell 上测试时，没有特殊的延迟：
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],ssh-dss,ssh-rsa,rsa-sha2-256,rsa-sha2-512>
debug1: kex_input_ext_info: [email protected] (unrecognised)
debug1: SSH2_MSG_SERVICE_ACCEPT received
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Authorized access only!
If you are not authorized to access or use this system, disconnect now!
All actions will be logged and unauthorized access could be legally pursued!
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debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: C:\\Users\\Jean\\.ssh\\id_server
debug1: read_passphrase: can't open /dev/tty: No such file or directory
Enter passphrase for key 'C:\\Users\\Jean\\.ssh\\id_server':
debug1: Authentication succeeded (publickey).
Authenticated to vpntls.com ([2xxxx:xxxxxxxx]:22).
debug1: channel 0: new [client-session]
debug1: Requesting [email protected]
debug1: Entering interactive session.
debug1: pledge: network
debug1: ENABLE_VIRTUAL_TERMINAL_INPUT is supported. Reading the VTSequence from console
debug1: ENABLE_VIRTUAL_TERMINAL_PROCESSING is supported. Console supports the ansi parsing
debug1: client_input_global_request: rtype [email protected] want_reply 0
debug1: Remote: /home/jean/.ssh/authorized_keys:4: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
Linux server 6.1.21-v7+ #1642 SMP Mon Apr 3 17:20:52 BST 2023