CVS commit: src/sys/netinet6

["Ryota Ozaki" <ozaki-r%netbsd.org@localhost>]

Module Name:    src
Committed By:   ozaki-r
Date:           Wed Oct 16 07:41:28 UTC 2019

Modified Files:
        src/sys/netinet6: ip6_input.c

Log Message:
Validate ip6_temp_preferred_lifetime (net.inet6.ip6.temppltime) on a change

ip6_temp_preferred_lifetime is used to calculate an interval period to
regenerate temporary addresse by
  TEMP_PREFERRED_LIFETIME - REGEN_ADVANCE - DESYNC_FACTOR
as per RFC 3041 3.5.  So it must be greater than (REGEN_ADVANCE +
DESYNC_FACTOR), otherwise it will be negative and go wrong, for example
KASSERT(to_ticks >= 0) in callout_schedule_locked fails.


To generate a diff of this commit:
cvs rdiff -u -r1.212 -r1.213 src/sys/netinet6/ip6_input.c

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