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If you want to use netstack without Bazel, just use the go branch:
https://github.com/google/gvisor/tree/go
go get gvisor.dev/gvisor/pkg/tcpip@go
The go branch is auto generated with all of the generated code checked in.
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Really cool to see others hacking on netstack, bit of a shame it's tied up in the gVisor monorepo (and all the Bazel idiosyncracies) but it's a very neat piece of kit.
I've actually been hacking on something similar lately, with a focus on building what I'm calling a layer 3 service mesh for the edge. More or less came out of my learned hatred for managing mTLS at scale and my dislike for shoving everything through a L7 proxy (and you still have the issue of authenticating you are actually talking to the proxy you expect).
Last week I got the first release of my userspace router shipped, worth taking a look if you want to play around with a WireGuard compatible VPN server that doesn't need elevated permissions, https://github.com/noisysockets/nsh/blob/main/docs/router.md
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In the issue of abysmal performance on cloud-compute/PaaS Im talking about the container runtime.
But given this article is about improving gvisors userland tcp performance significantly, it seems like the netstack stuff causes major performance losses too.
I saw a github link in another top article today https://github.com/misprit7/computerraria where the Readme's Pitch section feels very relevant to this.
