>4K writes to BPF

[Andrew Basterfield]

Hi

I am playing with jumbo frames in vblade, which uses write(2) on BPF to 
put it's raw AoE packets onto ethernet.

The problem I am having is with jumbo frames; when the write is greater 
than 4K it fails with I/O error.

Is this tweakable or fundamental?

I have tried ramping up net.raw.* from 8K to 32K; no joy

thanks

Andrew Basterfield