2014.04.25 values:

Sha256
[  2.68974487e-05  -7.74454427e-03]
Sha1
[  2.66306843e-05  -7.70144164e-03]
ByteSeqToWordSeq
[  2.07652270e-05  -5.97859852e-03]
WordSeqToByteSeq
[  4.18720193e-05  -1.29082713e-02]

Y-intercepts are negative, likely nonsense stemming from larger block
sizes running with fewer repetitions.

slopes are 26-42us/byte.

When arp rots:
netsh interface ipv4 add neighbors "Ethernet 2" 10.10.10.20 00-1b-21-31-8e-d9

serial debug:
/cygdrive/c/Program\ Files\ \(x86\)/raw/plink.exe -sercfg 115200,8,n,1 -serial com3
