Seems like this has been fixed in recent versions of QEMU again: $ qemu-system-x86_64 -serial telnet::0,server,nowait -nographic QEMU 3.1.93 monitor - type 'help' for more information (qemu) info chardev parallel0: filename=null serial0: filename=disconnected:telnet:0.0.0.0:41346,server compat_monitor0: filename=stdio
** Changed in: qemu Status: New => Fix Released -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1544524 Title: "info chardev" not showing the real port in use Status in QEMU: Fix Released Bug description: With Qemu 2.1.2 =============== pharidos@uks2:~$ qemu-system-x86_64 -hda Disk.qcow2 -serial telnet::0,server,nowait -nographic QEMU 2.1.2 monitor - type 'help' for more information (qemu) info chardev parallel0: filename=null serial0: filename=telnet:0.0.0.0:44189,server ^^^^^^^^^^^^^^^^^^^^^^^^^^^ serial console is using port 44189 compat_monitor0: filename=stdio (qemu) With Qemu 2.5.0 =============== pharidos@uks2:~$ qemu-system-x86_64 -hda Disk.qcow2 -serial telnet::0,server,nowait -nographic QEMU 2.5.0 monitor - type 'help' for more information (qemu) info chardev parallel0: filename=null serial0: filename=disconnected:telnet::0,server ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ serial console port not shown compat_monitor0: filename=stdio (qemu) To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1544524/+subscriptions