Bug#944769: python3-h5py fails to import if offline due to apparent MPI failure

[Drew Parsons]

Package: python3-h5py
Version: 2.10.0-2
Followup-For: Bug #944769
Control: severity -1 important

I don't think this issue warrants severity Serious.

The failure is not triggered simply by having no network connection.
It is only triggered if there is no network interface at all. The only
way there can be no network interface is if the localhost loopback
interface lo has been taken down.  This is a very artificial situation
I think.

Ensure that the loopback interface is active with
  ifup lo


-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.3.0-2-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python3-h5py depends on:
ii  libc6                               2.29-3
ii  libhdf5-openmpi-103                 1.10.4+repack-10
ii  python3                             3.7.5-3
ii  python3-mpi4py                      3.0.3-1
ii  python3-numpy [python3-numpy-abi9]  1:1.17.4-1
ii  python3-six                         1.13.0-1

python3-h5py recommends no packages.

Versions of packages python3-h5py suggests:
ii  python-h5py-doc  2.10.0-2

-- no debconf information