[Libguestfs] guestfish Remote Images IPv6 Support

I have scoured the web and can't find anything on the topic: Is IPv6 supported for remote image targets? For example: guestfish --format=raw --ro -a rbd://[fd00::cefc:1]:6789/images/CentOS-7-x86_64-GenericCloud-1901 Does not work citing the following: libguestfs: trace: set_verbose true libguestfs: trace: set_verbose = 0 libguestfs: create: flags = 0, handle = 0x5560231bdfb0, program = guestfish libguestfs: trace: set_pgroup true libguestfs: trace: set_pgroup = 0 libguestfs: trace: add_drive "images/CentOS-7-x86_64-GenericCloud-1901" "readonly:true" "format:raw" "protocol:rbd" "server:tcp:[fd00::cefc:1]:6789" libguestfs: creating COW overlay to protect original drive content libguestfs: trace: get_tmpdir libguestfs: trace: get_tmpdir = "/tmp" libguestfs: trace: disk_create "/tmp/libguestfs3pGMi6/overlay1.qcow2" "qcow2" -1 "backingfile:rbd:images/CentOS-7-x86_64-GenericCloud-1901:mon_host=[fd00::cefc:1]\:6789:auth_supported=none" "backingformat:raw" libguestfs: command: run: qemu-img libguestfs: command: run: \ create libguestfs: command: run: \ -f qcow2 libguestfs: command: run: \ -o backing_file=rbd:images/CentOS-7-x86_64-GenericCloud-1901:mon_host=[fd00::cefc:1]\:6789:auth_supported=none,backing_fmt=raw libguestfs: command: run: \ /tmp/libguestfs3pGMi6/overlay1.qcow2 qemu-img: /tmp/libguestfs3pGMi6/overlay1.qcow2: invalid conf option :cefc:1]:6789:auth_supported: No such file or directory Could not open backing image to determine size. libguestfs: error: qemu-img: /tmp/libguestfs3pGMi6/overlay1.qcow2: qemu-img exited with error status 1, see debug messages above libguestfs: trace: disk_create = -1 (error) libguestfs: trace: add_drive = -1 (error) libguestfs: trace: close libguestfs: closing guestfs handle 0x5560231bdfb0 (state 0) libguestfs: command: run: rm libguestfs: command: run: \ -rf /tmp/libguestfs3pGMi6 Other variations of the IPv6 address fail in a similar fashion, some even failing with the URI parser.  It seems as though everything after the first : in the address is getting parsed as args. Changing this IPv6 address over to a hostname allows the command to work. Unfortunately I'm working within the confines of OpenStack and some of it's requests here and my Ceph cluster is v6-only so I can't easily just have it use hostnames to solve the issue. -- Jonathan Wright KnownHost, LLC https://www.knownhost.com