[patch] ifconfig -L shows inet6 addresses pltime and vltime as zero since 10.0-RELEASE

[Guy Yur]

Hi,

"ifconfig -L" shows inet6 addresses pltime and vltime as zero since
10.0-RELEASE.

Seems that ifconfig was missed in r253970 which
changed usage from time_second to time_uptime.

I filed bin/188520 with a patch to use clock_gettime(CLOCK_MONOTONIC_FAST)
in ifconfig per r253970 comment.

http://www.freebsd.org/cgi/query-pr.cgi?pr=188520


ifconfig -L
...
        inet6 XXXX:XXXX:XXXX:XXXX:YYYY:YYYY:YYYY:YYYY
          prefixlen 64 autoconf temporary pltime 0 vltime 0


The prefix is learned via router advertisment.
tcpdump shows non zero values in the icmp6 packet.

A test program that calls SIOCGIFALIFETIME_IN6
shows the value is < wall clock which is
the test done by ifconfig.
time = 1397314436
ia6t_preferred = 608907
ia6t_expire = 2596107


Thanks,
Guy
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