[ssh] no matching key exchange method found. Their offer: diffie-hellman-group1-sha1

Q:

[happy@localhost happy]$ ssh 192.168.1.1
Unable to negotiate with 192.168.1.1: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1

A:

[happy@localhost happy]$ ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 admin@192.168.1.1

Reference:

• [solved] ssh: no matching key exchange method with dropbear