def _set_default_vrf(self, v, load=False):
    """
    Setter method for default_vrf, mapped from YANG variable /rbridge_id/router/router_bgp/address_family/ipv6/ipv6_unicast/default_vrf (container)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_default_vrf is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_default_vrf() directly.
    """
    if hasattr(v, "_utype"):
      v = v._utype(v)
    try:
      t = YANGDynClass(v,base=default_vrf.default_vrf, is_container='container', presence=False, yang_name="default-vrf", rest_name="", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions={u'tailf-common': {u'info': u'IPv4 unicast address Family', u'cli-suppress-no': None, u'cli-add-mode': None, u'cli-drop-node-name': None, u'cli-full-command': None, u'callpoint': u'AfIpv6Ucast', u'cli-mode-name': u'config-bgp-ipv6u'}}, namespace='urn:brocade.com:mgmt:brocade-bgp', defining_module='brocade-bgp', yang_type='container', is_config=True)
    except (TypeError, ValueError):
      raise ValueError({
          'error-string': """default_vrf must be of a type compatible with container""",
          'defined-type': "container",
          'generated-type': """YANGDynClass(base=default_vrf.default_vrf, is_container='container', presence=False, yang_name="default-vrf", rest_name="", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions={u'tailf-common': {u'info': u'IPv4 unicast address Family', u'cli-suppress-no': None, u'cli-add-mode': None, u'cli-drop-node-name': None, u'cli-full-command': None, u'callpoint': u'AfIpv6Ucast', u'cli-mode-name': u'config-bgp-ipv6u'}}, namespace='urn:brocade.com:mgmt:brocade-bgp', defining_module='brocade-bgp', yang_type='container', is_config=True)""",
        })

    self.__default_vrf = t
    if hasattr(self, '_set'):
      self._set()
Setter method for default_vrf, mapped from YANG variable /rbridge_id/router/router_bgp/address_family/ipv6/ipv6_unicast/default_vrf (container)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_default_vrf is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_default_vrf() directly.