We still have brief periods of no talk path every couple of months on our 9100s. I either re-set them or it goes away by itself.
I've read that it has something to do with CDP.
I used DIM to pull the arp cache from the 8100.
Apparently this box doesn't like seeing quad zero's for an IP address and Cisco Discovery Protocol generates that somehow.
The entry that I isolated belongs to Cisco. I showed it to our network administrator and he said "your box shouldn't be able to see that".
So I've opened a can of worms but haven't sorted it out yet.
I'll post if I get any closer to a solution.

===== << 09/26, 09:05 >> =====
ip arp
IP Address MAC Address Time Info(Now:6168206)
127.000.000.001 00:00:00:00:00:00 3268
010.042.001.001 E8:B7:48:28:F2:3C 6163165
010.042.135.064 00:60:B9:B2:FB:6F 6109780
010.042.135.051 58:C2:32:02:AA:4D 10491
010.042.050.021 00:60:B9:4E:69:21 6145633
010.042.050.020 00:60:B9:E1:72:64 6152050

000.000.000.000 E8:B7:48:28:F4:BC 6042329

192.168.000.011 00:25:64:71:0D:1F 6162550
9:05:31 >>
9:05:31 >>