Chunk-1's empirical spike against smolvm 0.8.0 contradicted the
research note that motivated the gvproxy network design: smolvm
exposes no virtio-net-over-unixgram attachment. The first draft's
"why gvproxy, not TSI" argument turns out to apply only to
`--outbound-localhost-only`, not to TSI generally.
New design:
- Bundle (PRD 0024) runs on a dedicated per-bottle docker bridge
with a pinned IP. Smolfile sets `[network] allow_cidrs =
["<bundle-ip>/32"]` and nothing else. Agent can reach the bundle
and nothing else — host loopback, LAN, public internet directly
are all refused at the VMM (TSI) layer.
- Bind-address mitigation: egress binds 127.0.0.1:9099 inside the
bundle (pipelock-internal); pipelock / git-gate / supervise
bind 0.0.0.0 so the agent (across the TSI allowlist) can reach
them. This is the port-granularity TSI's IP-only allowlist
doesn't provide.
- Smolfile renderer rewritten in chunk 2 to smolvm 0.8.0's actual
schema (image / entrypoint / cmd / env / [network] allow_cidrs).
The chunk-1 renderer (name= / [[net]]= under the gvproxy
design) emits the wrong shape and will be replaced.
- Drop gvproxy + VZFileHandleNetworkDeviceAttachment + the
PyObjC fallback. Backend layout loses gvproxy_config.py,
gvproxy.py, vfkit_attach.py.
- Acceptance plan adds an egress-port-bypass probe in addition
to the localhost-reach probe.
- Chunks reshape: chunk 1 stays (renderer rewrite is part of
chunk 2's cost); chunk 2 covers VM lifecycle + bundle + new
Smolfile renderer; chunk 3 is the bundle bind-address change;
chunks 4-5 unchanged in spirit.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
didericis-claude