Allows router to be compatible with those portions of
implementation by other vendors which do not comply with the
standards specified in RFC 2362 for PIM. Turn RFC2362
non-compliance on or off for different issues of compatibility :
PIM_BSR_ZERO_FRAGMENT_TAG 0x00000001 Allows fragment tag in Bootstrap messages to be zero
PIM_RP_ZERO_PREFIX_COUNT 0x00000002 Sends non-zero prefix count in RP_Adv messages
PIM_REGISTER_CHECKSUM 0x00000004 Computes register packet checksum on header and data