This object determines the address of the network or host from
which the packet is being sent. If this object value is 0.0.0.0
and the value of caAclIPV4ACESourceWildCardMask object in the
same entry is 255.255.255.255, this entry matches any source
address.
If this object value is not 0.0.0.0 and the value of
caAclIPV4ACESourceWildCardMask is 0.0.0.0, this entry matches
specific host address defined in this object.