[libvirt] IPv6 iscsi targets

Hello. Before running iscsiadm, libvirt translates the source host to an IP address for the --portal option. However, it only resolves to IPv4 and only uses the first address. iscsiadm allows a hostname to be specified [1][2], but specifying a hostname instead of the address doesn't work if the hostname translates to an unreachable IPv6 address first. Would it be reasonable to go through all the addresses returned by getaddrinfo() in libvirt, try to connect() to it and pass the address to iscsiadm when the connection succeeds? Or we should just pass the hostname and make iscsiadm deal with it? Jan [1] https://github.com/mikechristie/open-iscsi/commit/4d045cd [2] https://bugzilla.redhat.com/show_bug.cgi?id=624437