(by sklower ...) abort connection attempt early in presence of
multiple retransmissions and errors

multicast changes from lbl

null pointer bug from Leres

since IFF_NOARP doesn't cause the ethernet address to be calculated
from the IP address any more, it would be insane to ignore arp packets.

if you have markedly different interface addresses on the same iface,
use the one chosen in the route when in_pcbconnect()ing. (By Dennis Ferguson)

gcc lint

gcc lint

gcc lint

update publication date for copyright, rename as real in_cksum
with no trailing _c so that it can actually be used in pmax version;
#include "param.h" instead of ../h/types.h; similarly with mbuf.h

don't set cloning flag on proxy arp entries

proc.h not necessary

shut up lint

make it possible to have different metrics on different addresses
on same physical interface

new conventions for rt_missmsg

do not send redirects if a packet is forwarded on the same interface
because of a secondary and different IP addr on that interface.

have to include proc.h before socketvar.h

have to use bcopy as short may be unaligned

yet another torek fix

fix arg to arpwhohas to match prototype

lint garbage

lint changes for sparc port (checked in by sklower)

lint changes for sparc port, bug fix on default case

check RTT lock, not MTU lock

reference count ifaddrs to make them safe for deletion

enforce cloning bit for route to interface