>  My recollection was that there was some way to get the destination
>address/port to which an UDP packet was sent by toggle either options to
>recvmsg(), or via setsockopt(). The option was in 4.3, I'm sure... But I
>haven't used it since.
>
>  Has it disappeared?
> 
>  I hate having to open a socket for each address that exists (a la BIND,
>etc...) , and this is NetBSD specific.

using IP_RECVDSTADDR and recvmsg(2) (instead of read(2), recv(2), or
recvfrom(2)) works just fine for me.

i usually drop my own (admittedly non-thread safe) implementation of
recvfrom(2) into program that i write that use udp that stuffs the
receiving ip address into a global for me to look at.

-- 
|-----< "CODE WARRIOR" >-----|
codewarrior@daemon.org             * "ah!  i see you have the internet
twofsonet@graffiti.com (Andrew Brown)                that goes *ping*!"
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