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Why does Cosmos localnet reserve 65k IP addresses in 196.168.0.0 CIDR? #9646

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frumioj opened this issue Jul 7, 2021 · 1 comment · Fixed by #9667
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Why does Cosmos localnet reserve 65k IP addresses in 196.168.0.0 CIDR? #9646

frumioj opened this issue Jul 7, 2021 · 1 comment · Fixed by #9667
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@frumioj
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frumioj commented Jul 7, 2021

- subnet: 192.168.10.0/16

Seems to me it only needs 4 (ie. one for each localnet node), and subnet should be restricted, so as to prevent overlap with other docker local nets, or other uses of those IP addresses which might cause conflicts?

How about: 192.168.10.0/25 for 128 localnet IP addresses?

@alexanderbez
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There is no reason this was chosen. Feel free to open a PR 👍

@mergify mergify bot closed this as completed in #9667 Jul 12, 2021
mergify bot pushed a commit that referenced this issue Jul 12, 2021
…sses) to reduce docker network conflicts (#9667)

Changed the localnet network from /16 to /25 reducing IP address space to 128 which should be sufficient for localnet

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## Description

Closes: #9646 

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---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [x] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [x] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed 
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [x] manually tested (if applicable)
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