The Linux file /proc/net/dev reads like this:
[me@host ~]$ cat /proc/net/dev
Inter-| Receive | Transmit
face |
Since noone has answered for almost six months, I feel free to speculate:
I don't think the errs and drops overlap. I also think that errs are checksum or other bad data in a received packet (i.e. not enough data to constitute a whole packet). Further, I believe drops only apply to outgoing packages - how would the system know about dropped packages somewhere else?