bin/59034: systat(1) inet.* data resets on refresh

[wcm%hecuba.sigwinch.xyz@localhost]

>Number:         59034
>Category:       bin
>Synopsis:       systat(1) inet.* data resets on refresh
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 28 01:25:00 +0000 2025
>Originator:     wcm%hecuba.sigwinch.xyz@localhost
>Release:        NetBSD 10.1
>Organization:
Wolfgang Corcoran-Mathe  <wcm%sigwinch.xyz@localhost>
>Environment:
System: NetBSD hecuba.sigwinch.xyz 10.1 NetBSD 10.1 (GENERIC) #0: Mon Dec 16 13:08:11 UTC 2024 mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:
	Information incorrectly resets after refresh in the inet.*
	lower-window displays offered by the systat(1) program.
	For example, 'systat inet.tcp' shows correct information when
	it is first run, but all fields reset when the program refreshes:
	in my test run, "total TCP packets received" begins at 17873, then
	changes to 2 when systat refreshes. Other cumulative fields show
	the same behavior: counters reset on refresh, instead of ticking
	up.

	All of systat's inet.* displays seem to be affected by this bug.
	Other displays (e.g. bufcache, iostat, etc.) work correctly.

>How-To-Repeat:
	Run 'systat inet.tcp', 'systat inet.icmp', etc.
>Fix: