Make sure deltas are correct after restart of PPSI
After merging of BMCA (commit:e7af1776), restarting the ppsi causes all deltas to become 0's. From wr_mon:
Master PHY delays: TX: 0.000 nsec, RX: 0.000 nsec
Slave PHY delays: TX: 0.000 nsec, RX: 0.000 nsec
Re-plug or ifconfig down/up fixes the delta.
problem was probably introduced in the commit: cf8c92a6 or 8b6982bd