如何轻松区分两个 nmap 扫描输出？

我运行了一次扫描，插入了一个树莓派，然后再次运行了一次扫描。是否有实用程序或选项nmap可以让我轻松区分两个扫描输出以找到我的树莓派的 IP 地址？

使用的 nmap 扫描：

nmap -sP 192.168.86.1/24

貌似不能和mac上ndiff同时安装：nmap

$ brew install ndiff 
Error: Cannot install ndiff because conflicting formulae are installed.
  nmap: because both install `ndiff` binaries

Please `brew unlink nmap` before continuing.

Unlinking removes a formula's symlinks from /usr/local. You can
link the formula again after the install finishes. You can --force this
install, but the build may fail or cause obscure side effects in the
resulting software.

周期性差异。