Giovanni

import paramiko
import sys

nbytes = 4096
hostname = '192.168.1.105'
port = 22
username = 'root'
password = '123'

try:
    client = paramiko.SSHClient()
    client.load_system_host_keys()
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())#set_missing_host_key_policy(paramiko.WarningPolicy())
    client.connect(hostname, port=port, username=username, password=password)
    stdin, stdout, stderr = client.exec_command('echo "Puri            IN  A   192.168.3.13" >> /var/named/dynamic/db.grupo3.net')#<---Comandos aca
    print (stdout.read().decode("utf-8"))
    stdin, stdout, stderr = client.exec_command("cat /var/named/dynamic/db.grupo3.net")#<---Comandos aca
    print (stdout.read().decode("utf-8"))
finally:
    client.close()