This attribute specifies the network number of the service to be filtered
from SAP packets. The network number can be entered either as a
dashed hex string or a string of hex digits entered in pairs of hex digits
up to a maximum length of 8 digits. (For example a valid network
number would be ff-ff-ff-ff or ffffffff). A network number preceded by a
caret (^) should be interpreted as filtering all SAP packets except for the
ones with this network number.