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vxlan id leak #2614
Sometimes after network deletion vxlan id isn't released back.
Our system uses overlay networks in swarm cluster. Workflow procedure:
It is normally, that such iteration are performed in parallel.
AWS EC2 Centos 7.3
Steps to reproduce
I've written bash script to reproduce our workflow without our system: vxlanid_leak.zip
vxlan id leak is reproduced with it as well. Just get free ids number, run
After update docker to 1.12 the total number of available ids become much bigger, but leak is still remain.
We failed to reproduce it on pure docker.
To get number of free vxlanid we used this utility.
Related issue in docker: moby/moby#29756