В России ответили на имитирующие высадку на Украине учения НАТО18:04
Network egress control — compute isolation means nothing if the sandbox can freely phone home. Options range from disabling networking entirely, to running an allowlist proxy (like Squid) that blocks DNS resolution inside the sandbox and forces all traffic through a domain-level allowlist, to dropping CAP_NET_RAW so the sandbox cannot bypass DNS with raw sockets.
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Платон Щукин (Редактор отдела «Экономика»)
"There were engineers and managers saying it couldn't be done, all these reasons why it was too dangerous," she says.