CentOS 7 Force Reverse Dns Lookup For None Registered Addr

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I have an application running on a home network. the client is windows and the server is CentOS 7. ​I can access the application from a browser, but when I try a HTTP POST from another CentOS 7 box (CLI) I get 54 ECONNRESET
Connection reset by peer RECV. after reviewing TCPDUMP i see that CentOS
drops the connection after trying to do a reverse DNS lookup. The problem is that I am not using DNS but direct IP addresses. How can I force CentOS not to do a reverse DNS lookup?

Best, ITschak

One thought on - CentOS 7 Force Reverse Dns Lookup For None Registered Addr

  • Did you `tcpdump` with the -nn option? If not than tcpdump was probably doing the reverse DNS lookup.