This is the bit mask representing the type of this translation.
Each bit specifies the type as follows:
The translation could be only ONE of the following three...
0x01000000 - This translation is origianted on this router,
i.e. this NAT router performed the translation.
0x02000000 - This translation is learned from the peer,
i.e. this translation was learned from the
peer using NAT Synchronization feature.
0x04000000 - This translation is owned,
i.e. it was originally learned from peer, but
this router received traffic which used this
translation.
...and only ONE of the following three.
0x00000010 - This translation is the STATIC translation.
0x00000020 - This translation is Dynamic(1 to 1) translation.
0x00000040 - This translation is N to 1 translation.