libio-fdpass-perl 1.3-1build5 (s390x binary) in ubuntu oracular

 IO::FDPass, the small low-level module only has one purpose: pass a file
 descriptor to another process, using a (streaming) unix domain socket (on
 POSIX systems) or any (streaming) socket (on WIN32 systems). The ability to
 pass file descriptors on windows is currently the unique selling point of
 this module.