def _set_ipv6_address(self, v, load=False):
    """
    Setter method for ipv6_address, mapped from YANG variable /interface/fortygigabitethernet/ipv6/ipv6_config/address/ipv6_address (list)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_ipv6_address is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_ipv6_address() directly.
    """
    if hasattr(v, "_utype"):
      v = v._utype(v)
    try:
      t = YANGDynClass(v,base=YANGListType("address",ipv6_address.ipv6_address, yang_name="ipv6-address", rest_name="ipv6-address", parent=self, is_container='list', user_ordered=True, path_helper=self._path_helper, yang_keys='address', extensions={u'tailf-common': {u'info': u'Set the IP address of an interface', u'cli-no-key-completion': None, u'cli-suppress-mode': None, u'cli-compact-syntax': None, u'cli-drop-node-name': None, u'cli-no-match-completion': None, u'callpoint': u'phy-intf-ipv6-addr-cp'}}), is_container='list', yang_name="ipv6-address", rest_name="ipv6-address", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions={u'tailf-common': {u'info': u'Set the IP address of an interface', u'cli-no-key-completion': None, u'cli-suppress-mode': None, u'cli-compact-syntax': None, u'cli-drop-node-name': None, u'cli-no-match-completion': None, u'callpoint': u'phy-intf-ipv6-addr-cp'}}, namespace='urn:brocade.com:mgmt:brocade-ipv6-config', defining_module='brocade-ipv6-config', yang_type='list', is_config=True)
    except (TypeError, ValueError):
      raise ValueError({
          'error-string': """ipv6_address must be of a type compatible with list""",
          'defined-type': "list",
          'generated-type': """YANGDynClass(base=YANGListType("address",ipv6_address.ipv6_address, yang_name="ipv6-address", rest_name="ipv6-address", parent=self, is_container='list', user_ordered=True, path_helper=self._path_helper, yang_keys='address', extensions={u'tailf-common': {u'info': u'Set the IP address of an interface', u'cli-no-key-completion': None, u'cli-suppress-mode': None, u'cli-compact-syntax': None, u'cli-drop-node-name': None, u'cli-no-match-completion': None, u'callpoint': u'phy-intf-ipv6-addr-cp'}}), is_container='list', yang_name="ipv6-address", rest_name="ipv6-address", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions={u'tailf-common': {u'info': u'Set the IP address of an interface', u'cli-no-key-completion': None, u'cli-suppress-mode': None, u'cli-compact-syntax': None, u'cli-drop-node-name': None, u'cli-no-match-completion': None, u'callpoint': u'phy-intf-ipv6-addr-cp'}}, namespace='urn:brocade.com:mgmt:brocade-ipv6-config', defining_module='brocade-ipv6-config', yang_type='list', is_config=True)""",
        })

    self.__ipv6_address = t
    if hasattr(self, '_set'):
      self._set()