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cmd/lopower: add Limitations to README

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Change-Id: I6baaa7fa45eaa0c90482123acc51d0f402205e96
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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Brad Fitzpatrick 2024-11-03 16:55:02 -08:00 committed by Anton Tolchanov
parent 7fdeedcda3
commit 6240c78684
1 changed files with 5 additions and 0 deletions
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cmd/lopower/README.md
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@ -18,3 +18,8 @@ Tailscale LOPOWER is a proxy that you run nearby that bridges a low-power WireGu
* optional IPv4 support. IPv6 is always enabled, as it never conflicts with anything. But IPv4 (or CGNAT) might already be in use on your client's network.
* includes a DNS server (at `fd7a:115c:a1e0:9909::1` by default and optionally also at `10.90.0.1`) to serve both MagicDNS names as well as forwarding non-Tailscale DNS names onwards
* if IPv4 is disabled, MagicDNS `A` records are filtered out, and only `AAAA` records are served.
## 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