Ping stress (>=990 bytes)

[gds at chartertn.net (Gene Smith)]

Another question on dropped packets. I am able to ping (even flood ping) 
up to a length of 980 bytes with no loss. When I go over this my tcp/ip 
stack seem to go bad. Regular pings (56 bytes) sometimes don't respond, 
or responds with a huge amount of data (1022 bytes). Is there a maximum 
ping length in rtems?  I see no bad stats in netdemo. My (newly made) 
driver has buffers for 1536 bytes.

Wondering if others can ping the rtems stack with >=990 bytes?

-gene