You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SandboxArea: what it touches
ImprovementsKind: in v2.1.224,
ImprovementsSection of the release
What
Proxy settings injected into the sandbox (HTTP_PROXY, ALL_PROXY, CLOUDSDK_PROXY_USERNAME, and the socat/ssh ProxyCommand) now use a username with an instance suffix rather than the fixed srt, so concurrent sandboxes no longer share one identity. If the suffixed name would exceed 255 bytes it falls back to plain srt.
Evidence
CLOUDSDK_PROXY_USERNAME=
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
