+ ##########
+ # on the virsh containers, DNS resolution using gethostbyaddr
+ # won't work fine, for the hosts under .pl.sophia.inria.fr
+ # although these IPs can be reversed from virtually everywhere else
+ #
+ # this has started with something around fedora35 so I am suspecting python-3.10
+ #
+ # in any case, here's a quick and dirty workaround, as I have bumped my head
+ # against the screen for two good hours and not found any single clue
+ # about how to deal with this properly
+
+ import subprocess
+
+ def workaround_gethostaddr(ip):
+ command = f"host {ip} 8.8.8.8"
+ completed = subprocess.run(command, shell=True, capture_output=True)
+ pieces = completed.stdout.decode().split("domain name pointer ")
+ if len(pieces) == 2:
+ return pieces[1].replace(".\n", "")
+ else:
+ return None
+