if err != nil {
		err = &OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: err}
	}
	return ifat, err
}

// MulticastAddrs returns a list of multicast, joined group addresses
// for a specific interface.
func (ifi *Interface) MulticastAddrs() ([]Addr, error) {
	if ifi == nil {
		return nil, &OpError{Op: "route", Net: "ip+net", Source: nil, Addr: nil, Err: errInvalidInterface}
	}

		{"(*IPConn).WriteToIP", Method, 0},
		{"(*IPNet).Contains", Method, 0},
		{"(*IPNet).Network", Method, 0},
		{"(*IPNet).String", Method, 0},
		{"(*Interface).Addrs", Method, 0},
		{"(*Interface).MulticastAddrs", Method, 0},
		{"(*ListenConfig).Listen", Method, 11},
		{"(*ListenConfig).ListenPacket", Method, 11},
		{"(*ListenConfig).MultipathTCP", Method, 21},
		{"(*ListenConfig).SetMultipathTCP", Method, 21},