ndiff 7.70+dfsg1-6~build1 (s390x binary) in ubuntu disco

 Ndiff is a tool to aid in the comparison of Nmap scans. It takes two
 Nmap XML output files and prints the differences between them them:
 hosts coming up and down, ports becoming open or closed, and things like that.
 It can produce output in human-readable text or machine-readable XML formats.