bdaddrs_equal
return bdaddrs_equal(a->l2cap_bdaddr, b->l2cap_bdaddr)
if (bdaddrs_equal(address->l2cap_bdaddr, BDADDR_NULL))
return bdaddrs_equal(address->l2cap_bdaddr, BDADDR_NULL)
return bdaddrs_equal(a->l2cap_bdaddr, b->l2cap_bdaddr);