Add a new data on the UDP payload

The UDP::payload replace command will automatically update the datagram length and checksum. The command syntax is as follows:

 

UDP::payload replace   

 

It's important to note that is the amount of data to replace. It is not the size of . For example, the following code snippet will insert the client IP address at the beginning of the datagram. The IP address will be inserted as a string. Perhaps you're attempting to insert the IP address as a 32 bit number?

 

when CLIENT_DATA {
    UDP::payload replace 0 0 [IP::remote_addr]
}