In trying to figure out why since upgrading to 6.5 ports/ntp was
spamming the logs with "adj_systime: Invalid argument" every 20 seconds
on some machines, I found this happened when it was calling adjtime(2)
with a small negative value in tv_usec.
The man page talks about negative deltas, but
recognize it, and terminated the session.
Attached a patch (against 6.3 stable) to ignore MPLSCP, which made
things work again.
detha
Index: sys/net/if_spppsubr.c
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RCS file: /cvs/src/sys/net/if_spppsubr.c,v
retrieving revision
