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cmd/lopower: flesh out Limitations

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Change-Id: Ifef0f10e8a516caa5ba63c37605f3af4f183c1e0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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Brad Fitzpatrick 2024-11-03 16:57:21 -08:00
parent 2e70eef65c
commit 3a3fc3e8ac
1 changed files with 2 additions and 1 deletions
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cmd/lopower/README.md
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@ -22,4 +22,5 @@ Tailscale LOPOWER is a proxy that you run nearby that bridges a low-power WireGu
## Limitations
* this runs in userspace using gVisor's netstack. That means it's portable (and doesn't require kernel/system configuration), but that does mean it doesn't operate at a packet level but rather it stitches together two separate TCP (or UDP) flows and doesn't support IP protocols such as SCTP or other things that aren't TCP or UDP.
* the standard WireGuard configuration doesn't support specifying DNS search domains, so resolving bare names like the `go` in `http://go/foo` won't work and you need
* the standard WireGuard configuration doesn't support specifying DNS search domains, so resolving bare names like the `go` in `http://go/foo` won't work and you need to resolve names using the fully qualified `go.your-tailnet.ts.net` names.
* since it's based on userspace tsnet mode, it doesn't pick up your system DNS configuration (yet?) and instead resolves non-tailnet DNS names using either your "Override DNS" tailnet settings for the global DNS resolver, or else defaults to `8.8.8.8` and `1.1.1.1` (using DoH) if that isn't set.