A Bit Mask corresponding to the neighbor's op- tions field.
Bit 1, if set, indicates that the system will operate on Type of Service metrics other than TOS 0. If zero, the neighbor will ignore all metrics except the TOS 0 metric.
Bit 2, if set, indicates that the system is Network Multicast capable; ie, that it imple- ments OSPF Multicast Routing.