Inconsistencies with IP_ONESBCAST and/or IP_SENDSRCADDR

[Bruce M. Simpson]

Andre Oppermann wrote:
>
> I have some WIP here too.  I'll send it to you later this afternoon.
>
Thanks, I look forward to seeing it, re Issue #2 IP_SENDSRCADDR.

Dealing with dhclient is a separate issue -- here, something like 
IP_SENDIF needs to be introduced, as we are truly in an 'ip unnumbered' 
situation -- ie the ifnet MAY not yet have been assigned an IPv4 address 
at all, and IP_SENDSRCADDR implies that you are source routing in the 
local stack by passing the address of a numbered interface

I have however dealt with Issue #1 by committing a fix to ip_output() 
for the IP_ONESBCAST && SO_DONTROUTE case.

This together with the fix you committed for ethernet next-hop 
resolution (thanks!) should mean that projects like OLSRD can stop using 
libnet and other hacks for sending 255.255.255.255 on FreeBSD.

The original broadtest tool has now been cleaned up and put into the 
tree under src/tools/regression/netinet/ipbroadcast.

Regards,
BMS