Created attachment 205559 [details] use the arc4random_stir macro freebsd 13+ doesn't have arc4random_stir. The spoofer system has configure logic to detect the presence of arc4random_stir but the C++ code currently doesn't use the logic correctly. This patch should fix the issue.
I would make minor modification to remove OpenBSD comment since defined(__OpenBSD__) was removed.
A commit references this bug: Author: sunpoet Date: Sun Jul 7 19:16:15 UTC 2019 New revision: 506192 URL: https://svnweb.freebsd.org/changeset/ports/506192 Log: Fix arc4random_stir on FreeBSD 13+ PR: 239029 Submitted by: Matthew Luckie <mjl@luckie.org.nz> (maintainer) Changes: head/net/spoofer/Makefile head/net/spoofer/files/patch-common-util.cc
Committed. Thanks!