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https://issues.apache.org/jira/browse/FLINK-15911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17305869#comment-17305869
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Bo Cui commented on FLINK-15911:
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1、all 0 has some security risks.
2、i think add new config, like network.allow.listen.0, default true.  if false, 
we shold use other address

> Flink does not work over NAT
> ----------------------------
>
>                 Key: FLINK-15911
>                 URL: https://issues.apache.org/jira/browse/FLINK-15911
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Coordination
>    Affects Versions: 1.10.0
>            Reporter: Till Rohrmann
>            Assignee: Xintong Song
>            Priority: Blocker
>              Labels: pull-request-available, usability
>             Fix For: 1.11.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Currently, it is not possible to run Flink over network address translation. 
> The problem is that the Flink processes do not allow to specify separate bind 
> and external ports. Moreover, the {{TaskManager}} tries to resolve the given 
> {{taskmanager.host}} which might not be resolvable. This breaks NAT or docker 
> setups where the external address is not resolvable from within the 
> container/internal network.



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