moby / moby/libnetwork

Change default network from 172.17.0.0/16 to 169.254.0.0/16

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#2,001 8 comments 12 reactions 0 assignees View on GitHub

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enhancement
Dominant language
Go
Stars
2.2k
Forks
875
PR merge metrics
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Description

Any network defined in RCF1918 should not be used. This may cause routing issue if you are trying to access resources with an IP which falls in that range.

169.254.0.0/16 is a network which will never be routed within any network (i hope not)

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the code and tests that define libnetwork’s default network; the issue gives the current CIDR (172.17.0.0/16) and proposed replacement (169.254.0.0/16). Done means the default uses the proposed range and routing-conflict behavior is covered by tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
networking
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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