snmpex.lua

snmpex_proto = Proto("snmpex","My SNMP  Extension")

snmpex_proto.fields.location = ProtoField.string("snmpex_proto.location","Location")

-- create a function to dissect it
function snmpex_proto.dissector(buffer,pinfo,tree)
	print("mydissector get called!(print)")

	pinfo.cols.protocol = "SNMPEX"

	local subtree = tree:add(snmpex_proto, buffer(), "My SNMP Extension")

	-- subtree:add(snmpex_proto.fields.location, location, tostring(buffer()))
	subtree:add(snmpex_proto.fields.location, buffer())
end

oid_table = DissectorTable.get("snmp.variable_oid")
oid_table:add("1.3.6.1.2.1.1.6.0",snmpex_proto)