Re: Erratic ping behavior, was Re: Pi3 answers ssh only if outbound ping is running on -current

On Sun, Mar 13, 2022 at 09:45:02PM -0700, Mark Millard wrote:
> 
> A point of testing is to compare/contrast different contexts
> instead of guessing about the alternatives. If the test
> that I proposed showed the failure, it would disprove your
> hypothesis --and it that happened it would be good to know.
> 

You're correct, as usual....

I just tried booting the 13.1-RC4 candidate on my Pi3 from
microSD. It exhibits the same strange "no response to inbound
ping" as before. It does seem to set time successfully using
ntp, and outbound ping works fine. 

Inbound ping from both the same (public) network and across
a NAT link from my LAN work very poorly. The NAT'd link shows 
92% packet loss, the direct link around 88% loss. 

The USB devices present are an FTDI232 and an ASMT usb-sata
bridge, neither is in active use. 

Inbound ssh connections time out, even with outbound ping 
running and getting answers. Not even a password prompt.

It's hard to believe I'm the only one seeing this......

Thanks for reading,

bob prohaska