设置client的mtu
ifconfig eth0 mtu 576
Ultimately, I added the following to /etc/ssh/ssh_config:
Host *
SendEnv LANG LC_*
HashKnownHosts yes
GSSAPIAuthentication yes
GSSAPIDelegateCredentials no
Ciphers aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc
HostKeyAlgorithms ssh-rsa,ssh-dss
MACs hmac-md5,hmac-sha1,hmac-ripemd160
vi .ssh/config
Host *
#ControlMaster auto
ControlMaster no
ControlPath ~/.ssh/%h-%p-%r
ControlPersist yes
ServerAliveInterval 30
ServerAliveCountMax 5