Hello,
    I use stunnel on FreeBSD 11.1. I install it from ports. Yesterday I updated to stunnel 5.43. However it stopped working. I investigated the problem and found the issue- instead on all network interfaces, "accept" listens on 127.0.0.1 :

sockstat -4
USER     COMMAND    PID   FD PROTO  LOCAL ADDRESS         FOREIGN ADDRESS
stunnel  stunnel    43945 7  tcp4   127.0.0.1:2222                *:*
stunnel  stunnel    43945 8  tcp4   127.0.0.1:3128                *:*
stunnel  stunnel    43945 9  tcp4   127.0.0.1:8080                *:*
stunnel  stunnel    43945 10 tcp4   127.0.0.1:1616                *:*

    A workaround is to modify "accept  = 0.0.0.0:3128" explicitly to listen on 0.0.0.0.
    Is this a bug or expected behaviour?

    Best regards,
    Bez Spam