I'm using the go-ethereum code (mainly discover (discv4) and rlpx) to write a node discovery tool.
The Programm is using discv4 to discover nodes on the internet and putting the discovered nodes into a que.
A different subroutine then pulls a node from the que and does the hole handshake thing to pass the "HELLO (0x00)" Message. So I get the Capabilities, Name of the Software that the Node is running, OS, ... .
Now I would like distinguish if node is actually a ETH or ETC node. How can I do that?