NM_PIPE_ROLE_MASTER
na->role == NM_PIPE_ROLE_MASTER ? '{' : '}');
if (pna->role == NM_PIPE_ROLE_MASTER)
role = NM_PIPE_ROLE_MASTER;
mna->role = NM_PIPE_ROLE_MASTER;
if (role == NM_PIPE_ROLE_MASTER) {
(reqna->role == NM_PIPE_ROLE_MASTER ? "master" : "slave"), reqna);