to be corrected. Text drawing is now improved significantly, but;
cursor is drawn incorrectly, copycols() trashes a screen, 'standout
(\033[7m)' results in lines reversed entirely until '\033[0m', and
possibly more issues. Not multi-colour, 8bpp only this moment. Costly
write memory barrier instrunctions should be eliminated using framebuffer
address aliasing technique for NetBSD/alpha.
and one which isn't. The latter is now used for ttyEcfg, enabling the
VT-switching ioctls to work on it. (This allows Linux X servers to work when
/emul/linux/dev/tty0 is linked to /dev/ttyEcfg.)
- oldstyle and PHDS IPv4+ARP; RARP, IPv6, Appletalk are matched now.
- in case this is an unfragmented or first-fragment IPv4, IPv6, ARP, RARP or
Appletalk packet, matching inside the payload is possible to the extent
already supported by tcpdump/libpcap. For 2nd and next fragments, this
won't work; it also won't work for oldstyle (RFC1051) IPv4 and ARP.
Avoid forwarding ip unicast packets which were contained inside
link-level multicast packets; having M_MCAST still set in the packet
header flags will mean that the packet will get multicast to a bogus
group instead of unicast to the next hop.
Malformed packets like this have occasionally been spotted "in the
wild" on a mediaone cable modem segment which also had multiple netbsd
machines running as router/NAT boxes.
Without this, any subnet with multiple netbsd routers receiving all
multicasts will generate a packet storm on receipt of such a
multicast. Note that we already do the same check here for link-level
broadcasts; ip6_forward already does this as well.
Note that multicast forwarding does not go through ip_forward().
Adding some code to if_ethersubr to sanity check link-level
vs. ip-level multicast addresses might also be worthwhile.
kill local definition of Debugger() - <sys/systm.h> DTRT
don't assume Debugger() is always available and put the call inside #ifdef DDB
Second part of a fix to PR #8637 by Izumi Tsutsui <tsutsui@ceres.dti.ne.jp>.
