Joel D. Elkins b758f04a50 Migrate to podman API rather than cli
Large change greatly expanding the linked footprint of this little
utility, but it is much faster and adds a couple of very nice features:

- set container sysctl settings to disable router advertisements as part
  of container definition. this means we no longer need to do this via
  `ip netns exec <container> sysctl -w ...` (followed by
  `ip netns exec ip -6 a flush...`). Major win.
- able to very quickly ascertain creation and run state of defined
  containers.
2022-07-25 10:13:36 -05:00
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