s/SliceContianer/SliceContainer/g Updates #9604 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We had a misstep with the semantics when applying an optimization that showed up in the roll into corp. This test ensures that case and related cases must be retained. Updates #9410 Updates #9601 Signed-off-by: James Tucker <james@tailscale.com>