more on trying rawsock

[<don...@is...>]

I also don't see any examples of recvfrom.  
 DEFUN(RAWSOCK:RECVFROM, socket buffer address \
      &key MSG_PEEK MSG_OOB MSG_WAITALL) {
suggests that this should work

 [1]> (setf saddr (rawsock:make-sockaddr :packet (make-array 16
 :element-type '(unsigned-byte 8)
      :initial-element 0)))
 #<RAWSOCK:SOCKADDR :%DATA #(17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0)>
 [2]> (setf socket (rawsock:socket :inet :packet :all))
 4
 [3]> (rawsock:recvfrom socket (rawsock:buffer) saddr)

but at this point it hangs.  I'm pretty sure the problem is *not* that
there is no network traffic to read.

Any suggestions?