Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

flannel is a network fabric for containers, designed for Kubernetes

Is flannel-io/flannel beginner-friendly?

The maintainers of flannel-io/flannel usually reply to a pull request within 2 days. 1 beginner-friendly issue is open now.

Stars
9.6k
Forks
2.9k
Open beginner issues
1
Indexed issues
12
Avg merge
2d 11h
Merged PRs (30d)
12
Dominant language
Go
License
Apache-2.0
Last GitHub push
Oct 13, 2026
Latest indexed
Oct 14, 2026
Contributing guide
No contributing guide
Code of conduct
No code of conduct
Beginner labels
No beginner labels indexed

How to contribute to flannel-io/flannel

  1. There is no contributing guide, so start from the README and a few recently merged pull requests to see how changes are proposed.
  2. Your contributions will be published under the project's Apache-2.0 license.
  3. Pick the open beginner-friendly issue below and comment that you want to work on it before you start.

Issues somebody may already be working on are listed last. List everything by date

  • netpol Helm chart option is broken
    Open

    Difficulty 2/5 1-3 hours Newbie friendliness 68/100

    flannel-io/flannel#2608 ·

    Maintainers usually reply within 2 days

  • host-gw: routes are not restored after the external interface is recreated
    Open

    Difficulty 3/5 1-2 days Newbie friendliness 42/100

    flannel-io/flannel#2588 · 1 comment ·

    Maintainers usually reply within 2 days

  • Carrier lost and dropped errors on flannel interface
    Open

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    flannel-io/flannel#2557 · 1 comment ·

    Maintainers usually reply within 2 days

  • Stale route accumulation
    Open

    Difficulty 5/5 Over a week Newbie friendliness 18/100

    flannel-io/flannel#2554 ·

    Maintainers usually reply within 2 days

  • etcd subnet watch never recovers from compaction (hot-loops, fills disk)
    Open

    Difficulty 3/5 1-2 days Newbie friendliness 40/100

    flannel-io/flannel#2470 · 3 comments ·

    Maintainers usually reply within 2 days

  • kube-flannel.yml broken due to change in PR #2466
    Open

    Difficulty 3/5 Half a day Newbie friendliness 28/100

    flannel-io/flannel#2469 · 3 comments · 2 reactions ·

    Maintainers usually reply within 2 days

  • CoreDNS restart loop / FailedCreatePodSandBox due to flannel subnet.env race condition
    Open

    Difficulty 4/5 Over a week Newbie friendliness 18/100

    flannel-io/flannel#2437 · 5 comments ·

    Maintainers usually reply within 2 days

  • The pod does not respond to the SYN packet.
    Open
    wontfix

    Difficulty 4/5 3-5 days Newbie friendliness 15/100

    flannel-io/flannel#2415 · 4 comments ·

    Maintainers usually reply within 2 days

  • Use apimachinery/pkg/util/wait to implement timeouts
    Open
    pinned

    Difficulty 4/5 3-5 days Newbie friendliness 22/100

    flannel-io/flannel#1920 · 1 comment ·

    Maintainers usually reply within 2 days

  • Ability to set initcwnd initrwnd
    Open
    kind/enhancement

    Difficulty 4/5 3-5 days Newbie friendliness 28/100

    flannel-io/flannel#1780 · 18 comments ·

    Maintainers usually reply within 2 days

  • Global Reconciliation Loop
    Open
    pinned

    Difficulty 5/5 Over a week Newbie friendliness 10/100

    flannel-io/flannel#1364 · 5 comments · 2 reactions ·

    Maintainers usually reply within 2 days

  • Allow configuring labels and annotations
    Possibly taken @brookelew claimed this 177 days ago. Open

    Difficulty 3/5 1-2 days Newbie friendliness 25/100

    flannel-io/flannel#2442 ·

    Maintainers usually reply within 2 days

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