Failed to migrate virtual machine to 4.3 host from 4.1 host after the upgrade

Issue

• After the upgrade of the hypervisor to 4.3, the live migration of the virtual machine to 4.3 hosts is not working from 4.1 host.
• vdsm log shows error below.

2019-07-04 14:50:55,684+0300 ERROR (migsrc/2f5b36ba) [virt.vm] (vmId='aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaa') Failed to migrate (migration:429)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 382, in run
    self._setupVdsConnection()
  File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 219, in _setupVdsConnection
    client = self._createClient(port)
  File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 206, in _createClient
    client_socket = utils.create_connected_socket(host, int(port), sslctx)
  File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 950, in create_connected_socket
    sock.connect((host, port))
  File "/usr/lib64/python2.7/site-packages/M2Crypto/SSL/Connection.py", line 185, in connect
    ret = self.connect_ssl()
  File "/usr/lib64/python2.7/site-packages/M2Crypto/SSL/Connection.py", line 178, in connect_ssl
    return m2.ssl_connect(self.ssl, self._timeout)
SSLError: (104, 'Connection reset by peer')