# Address used in pyproject.toml

**URL:** <https://discuss.flower.ai/t/address-used-in-pyproject-toml/710>\
**Category:** Flower Help - Intermediate\
**Tags:** flower, docker\
**Created:** [February 18, 2025, 3:37pm UTC](https://discuss.flower.ai/t/address-used-in-pyproject-toml/710 "2025-02-18T15:37:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![vagzikopis](https://avatars.discourse-cdn.com/v4/letter/v/9de0a6/32.png) [@vagzikopis](https://discuss.flower.ai/u/vagzikopis)\
**Post date:** [February 18, 2025, 3:37pm UTC](https://discuss.flower.ai/t/address-used-in-pyproject-toml/710/1 "2025-02-18T15:37:48Z")

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Recently I have been experimenting with deploying flower locally and on remote machines following the respective tutorials and quickstart examples. I observed that if I have the following:

- address = “superlink:9093”
- address = “\<SERVER\_IP\>:9093” (where SERVER\_IP is the IP of the machine that the superlink is running)

The connection between the supernodes and the superlink is achieved. Can you explain why this happens ?

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**Author:** ![javier](https://dub1.discourse-cdn.com/flex013/user_avatar/discuss.flower.ai/javier/32/116_2.png) [@javier](https://discuss.flower.ai/u/javier)\
**Post date:** [February 21, 2025, 7:45pm UTC](https://discuss.flower.ai/t/address-used-in-pyproject-toml/710/2 "2025-02-21T19:45:30Z")

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Hello @vagzikopis, I’m not sure if I understand your question. Are you asking about the connection between `SuperLink` and `SuperNodes` or the `address` in the pyproject.toml that’s what `flwr run` uses to “submit” the run to a running `SuperLink`?

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<div class="post-metadata">

**Author:** ![vagzikopis](https://avatars.discourse-cdn.com/v4/letter/v/9de0a6/32.png) [@vagzikopis](https://discuss.flower.ai/u/vagzikopis)\
**Post date:** [February 25, 2025, 1:10pm UTC](https://discuss.flower.ai/t/address-used-in-pyproject-toml/710/3 "2025-02-25T13:10:22Z")

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Hello, thanks for the response. I was referring to the `address` included in `pyproject.toml`. From your answer I understand that this is what the `flwr run CLI` utility uses to submit the run to a running `Superlink`.

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<div class="post-metadata">

**Author:** ![javier](https://dub1.discourse-cdn.com/flex013/user_avatar/discuss.flower.ai/javier/32/116_2.png) [@javier](https://discuss.flower.ai/u/javier)\
**Post date:** [February 26, 2025, 3:03pm UTC](https://discuss.flower.ai/t/address-used-in-pyproject-toml/710/4 "2025-02-26T15:03:32Z")

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Yes, exactly. If your superlink is running in server with public IP `123.123.123.123` and you don’t change the default ports for each API in Flower, the address in the `pyproject.toml` would be:

```TOML
address = "123.123.123.123:9093"

```