Module Name:	syssrc
Committed By:	itojun
Date:		Tue May  2 12:43:17 UTC 2000

Modified Files:
	syssrc/sys/net: if_sppp.h if_spppsubr.c

Log Message:
IPv6CP support.  if IPv6 link-local address is configured to the interface,
the interface tries to negotiate ifid with the other end by using IPv6CP.

other changes:
- do not share ppp sequence number across protocols.
- if LCP proto-rej is received, drop the protocol mentioned by the message.
  this is to be friendly with non-IPv6 peer (if the peer complains due to
  lack of IPv6CP, drop IPv6CP).  this basically implements "RXJ+" state
  transition in the RFC.
- cleanup debugging message.  always print blank just before message.

CAVEAT:
- if the peer uses the same MAC address as our side (pretty unlikely)
  the code may go into req-rej loop.
- even though we negotiate ifid, we don't configure destination address
  onto the interface.  it is not really necessary to do so (IMHO).
- I've tested this code on a NetBSD 1.4.2 node, which was with fair amount
  of modifications.  not sure if the committed code does it right... (please
  test and send reports)


To generate a diff of this commit:
cvs rdiff -r1.5 -r1.6 syssrc/sys/net/if_sppp.h
cvs rdiff -r1.8 -r1.9 syssrc/sys/net/if_spppsubr.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.