'Test if the address is reserved for site-local.
Note that the site-local address space has been deprecated by RFC 3879.
Use is_private to test if this address is in the space of unique local
addresses as defined by RFC 4193.
Returns:
A boolean, True if the address is reserved per RFC 3513 2.5.6.'

@property
def is_site_local(self):

    sitelocal_network = IPv6Network('fec0::/10')
    if isinstance(self, _BaseAddress):
        return (self in sitelocal_network)
    return ((self.network_address in sitelocal_network) and (self.broadcast_address in sitelocal_network))
