Solution 1:
Comment out or remove the lines
gssapikeyexchange no
gssapitrustdns no
from your /etc/ssh/ssh_config and you should be good.
SSH No Longer Working After Sierra Update
Solution 1:
Comment out or remove the lines
gssapikeyexchange no
gssapitrustdns no
from your /etc/ssh/ssh_config and you should be good.