Bit Operations

>>> OSPF_OPTION_EXTERNAL = 2
>>> OSPF_OPTION_ROUTER = 16
>>> OSPF_OPTION_AF = 256
>>> OSPF_OPTIONS = OSPF_OPTION_EXTERNAL | OSPF_OPTION_ROUTER | OSPF_OPTION_AF
>>> OSPF_OPTIONS
274
>>> bin(OSPF_OPTIONS)
'0b100010010'

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