Public bug reported: I'm not sure if this is a qemu thing or a getaddrinfo/glibc thing, or even just something about my laptop. However we have a test failure in nbdkit which only occurs when my laptop is not connected to wifi or other networking. It boils down to:
$ qemu-img info --image-opts "file.driver=nbd,file.host=::1,file.port=1234" qemu-img: Could not open 'file.driver=nbd,file.host=::1,file.port=1234': address resolution failed for ::1:1234: Address family for hostname not supported In a successful case it should connect to a local NBD server on port 1234, but if you don't have that you will see: qemu-img: Could not open 'file.driver=nbd,file.host=::1,file.port=1234': Failed to connect socket: Connection refused I can ‘ping6 ::1’ fine. It also works if I replace ‘::1’ with ‘localhost6’. My /etc/hosts contains: 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 ** Affects: qemu Importance: Undecided Status: New -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1814381 Title: qemu can't resolve ::1 when no network is available Status in QEMU: New Bug description: I'm not sure if this is a qemu thing or a getaddrinfo/glibc thing, or even just something about my laptop. However we have a test failure in nbdkit which only occurs when my laptop is not connected to wifi or other networking. It boils down to: $ qemu-img info --image-opts "file.driver=nbd,file.host=::1,file.port=1234" qemu-img: Could not open 'file.driver=nbd,file.host=::1,file.port=1234': address resolution failed for ::1:1234: Address family for hostname not supported In a successful case it should connect to a local NBD server on port 1234, but if you don't have that you will see: qemu-img: Could not open 'file.driver=nbd,file.host=::1,file.port=1234': Failed to connect socket: Connection refused I can ‘ping6 ::1’ fine. It also works if I replace ‘::1’ with ‘localhost6’. My /etc/hosts contains: 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1814381/+subscriptions