CVS commit: src/sys/netinet6

["Roy Marples" <roy%netbsd.org@localhost>]

Module Name:    src
Committed By:   roy
Date:           Sun Sep  1 19:26:22 UTC 2019

Modified Files:
        src/sys/netinet6: nd6.c nd6.h

Log Message:
inet6: Re-introduce ND6_LLINFO_WAITDELETE so we can return EHOSTDOWN

Once we've sent nd6_mmaxtries NS messages, send RTM_MISS and move to the
ND6_LLINFO_WAITDELETE state rather than freeing the llentry right away.
Wait for a probe cycle and then free the llentry.

If a connection attempts to re-use the llentry during ND6_LLINFO_WAITDELETE,
return EHOSTDOWN (or EHOSTUNREACH if a gateway) to match inet behaviour.
Continue to ND6_LLINFO_INCOMPLETE and send another NS probe in hope of a
reply. Rinse and repeat.

This reverts part of nd6.c r1.14 - an 18 year old commit!


To generate a diff of this commit:
cvs rdiff -u -r1.262 -r1.263 src/sys/netinet6/nd6.c
cvs rdiff -u -r1.86 -r1.87 src/sys/netinet6/nd6.h

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