The value of the object sdpBndIgmpSnpgGrpSrcAddr indicates
the address of the Source sending multicast traffic
to the group identified by sdpBndIgmpSnpgGrpAddress.
If the value of sdpBndIgmpSnpgGrpFilterMode corresponding to this entry
is 'include(1)', the receivers are interested in receiving traffic from
this Source.
If the value of sdpBndIgmpSnpgGrpFilterMode corresponding to this entry
is 'exclude(2)', the receivers are not interested in receiving traffic
from this Source.