Ethernet padding size

[Gal Itach]

Hi,

Is there a way to find how much padding does the Ethernet layer hold?

If so, is there a function to remove it from my Packet*?

I'm simulating a Router that receives packets from computer A and forwards them to computer B

the problem is that once it leaves A it is 54 bytes and reaches my simulation with 60 bytes and then 

leaves to B with 60 bytes.

It's a problem because B thinks the packet is not TCP ack when it is.

Thanks,

Gal