debug1: expecting SSH2_MSG_KEX_ECDH_REPLY解决

sudo ifconfig en1 mtu 1200

vi .ssh/config

Host *
    ControlMaster auto
    ControlPath ~/.ssh/%h-%p-%r
    ControlPersist yes

ssh命令

ssh root@139.162.x.x -v
ssh -o GSSAPIAuthentication=no root@139.162.x.x -v
ssh -t root@139.162.x.x -p 22