Root cause:

After setting SLB real/virtual service, there would be some statistics like:

'''

slb virtual http "VS_HA" 192.168.97.205 8888 arp 0

         drop 0 syns by ours in use

         drop 0 syns by over max connection

         drop 0 syns by get mss error

         drop 0 syns by bad mss size

         drop 0 syns by eroute error

         route 0 syns to system stack

'''

However, This stats shouldn't be showed under "show running/show tech" CLI command.

The difference between the code entry of "show" commands result in this bug.

Solution:

The CLI command: "show running/show tech" is runtime command, directly linked to c backend. 

Modify "usr/click/bin/backend/systool.c:6670 int ui_show_config()"

egrep space, route, drop, syns through system command buffer.

On APV, setting the same environment as reporter,

and run "show running" or "show tech"