[poky] libsnmp or adding a simple ipk to my image

[Arno Steffens]

Want to include libnetsnmp to my filesystem. By find -name *snmp I found the net-snmp_5.7.3.bb is doing the job, so  I added that to my image by IMAGE_INSTALL.

Checking the image - it contains more than I need. In tmp/deploy/ipk/xxx/ I cound found the interesting ipk-packet, the libnetsnmp30_5.7.3-r0_cortexa9hf-neon.ipk.

So my first question:
How can I just include this in my image? Adding  "libnetsnmp30" or "libnetsnmp" doesn't work. This rules probably work just for *.bb packages. But what to do to add a simple *.ipk file? 


Even more advanced would be not to install all libs from that ipkg package. 
How can I control that?