remove_header issue

[fefer]

The remove_header function works properly only when the packet header is in the beginning. However, other cases are still not being properly removed. Considering the following packet header arriving:

Ethernet -> IPv4 -> TCP -> Data

If for some reason we want tao remove TCP and keep the rest, ideally case would be:

Ethernet -> IPv4 -> Data

However, currently macsad removes part of Ethernet header, cause it found the TCP header and removed the size of the TCP header from the beginning of the packet. The result would be:

Ethernet (part of it) -> IPv4 -> TCP -> Data

We plan to enhance the remove_header support.