Well, I have made some investigations. Looks like sshuttle daemonizes in a bad way, here is my summary: 

+-----------------------------+---------------------------------+---------------------------------+
| Method to read from process | does script hang when reading   | Realtime process stdout teeing  |  
|                             | from sshuttle -D is done  ?     | ( dumping to console )          | +-----------------------------+---------------------------------+---------------------------------+
 open( "$cmd | ")              yes                                yes 
 IPC::open3                    yes                                yes
 Capture::Tiny::capture        no                                 no
 Capture::Tiny::tee            yes                                yes
 IPC::Cmd::run                 yes                                yes               
 Direct run sshsulte from      no                                 yes
 terminal
+-----------------------------+---------------------------------+---------------------------------+

Further reading probably needs to be taken around function waitpid or parent -> demonized processes interaction or something like that. But unfortunately I am not a specialist in this field. So any help would be appreciated.

In reply to Re: Capture::Tiny alternative by melezhik
in thread Capture::Tiny alternative by melezhik

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