A ping question and the infamous "sendto: No buffer space available" message

[Craig Leres]

John Robert LoVerso writes:
> This will probably only work in 4.3tahoe and later, where a call to
> if_flushq() was added to if_down().  This just frees all the packet
> chains queued for the interface - without this, ifconfig'ing back up
> just leaves the i/f queue full.

Gee, I've seen this work on a Vax running stock 4.3 BSD. Besides, I
don't see what different it makes if there are packets on the queue
when the interface becomes unwedged; seems to me they'll all get
dequeued as they are transmitted...

		Craig