After update Mac OS Sierra, Can not use ssh login remote system,how can I fix this?

Question

when I use user@ip to login remote system, it report like this:

debug1: /etc/ssh/ssh_config line 17: Applying options for *
/etc/ssh/ssh_config: lin         


        

Answer 1

You probably just need to disable GSSAPITrustDns in the ssh config. The following snippet does it by adding a # before the line:

vi ~/.ssh/config

:%s/GSSAPITrustDns/# GSSAPITrustDns/g

:wq

Similarly, comment other options also, like gssapikeyexchange etc.