直到最近，我能够毫无问题地通过SSH连接到我的Vagrant机器。但是现在：
$ ssh -vvv vagrant@127.0.0.1 -p 2222
OpenSSH_7.2p2 Ubuntu-4ubuntu2.1, OpenSSL 1.0.2g 1 Mar 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: resolving "127.0.0.1" port 2222
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to 127.0.0.1 [127.0.0.1] port 2222.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /home/user1/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user1/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user1/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user1/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user1/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user1/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user1/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user1/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.1
ssh_exchange_identification: read: Connection reset by peer
我在访客中检查了/etc/hosts.allow和/etc/hosts.deny。空空如也。我几乎肯定这与重写/etc/resolv.conf内容的人有关。内容现在是：
nameserver 8.8.8.8
nameserver 8.8.4.4
在我可以ping google.com的主机上，网络似乎没问题，但在客户端，我不能。但是对Vagrant机器的SSH不再有效。有什么想法吗？
答案 0 :(得分：1)
答案根本不是我的预期。在VirtualBox设置＆gt;网络＆gt;适配器1已连接电缆已连接选项已禁用。启用后，一切都恢复正常。