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increase default smoltcp interface limit and add to README

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Aram 🍐 2024-12-01 12:03:41 -05:00
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4
.cargo/config.toml Normal file
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@ -0,0 +1,4 @@
[env]
# Each interface needs 1 IP allocated to the WireGuard peer IP.
# "8" = 7 tunnels per protocol.
SMOLTCP_IFACE_MAX_ADDR_COUNT = "8"

8
README.md
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@ -126,6 +126,14 @@ INFO onetun::tunnel > Tunneling TCP [127.0.0.1:8081]->[192.168.4.4:8081] (via [
... would open TCP ports 8080 and 8081 locally, which forward to their respective ports on the different peers.
#### Maximum number of tunnels
`smoltcp` imposes a compile-time limit on the number of IP addresses assigned to an interface. **onetun** increases
the default value to support most use-cases. In effect, the default limit on the number of **onetun** peers
is **7 per protocol** (TCP and UDP).
Should you need more unique IP addresses to forward ports to, you can increase the limit in `.cargo/config.toml` and recompile **onetun**.
### UDP Support
**onetun** supports UDP forwarding. You can add `:UDP` at the end of the port-forward configuration, or `UDP,TCP` to support