Re: [PATCH nf] selftests: nft_nat: ensuring the listening side is up before starting the client

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On Mon, Feb 27, 2023 at 05:36:46PM +0800, Hangbin Liu wrote:
> The test_local_dnat_portonly() function initiates the client-side as
> soon as it sets the listening side to the background. This could lead to
> a race condition where the server may not be ready to listen. To ensure
> that the server-side is up and running before initiating the
> client-side, a delay is introduced to the test_local_dnat_portonly()
> function.
> 
> Before the fix:
>   # ./nft_nat.sh
>   PASS: netns routing/connectivity: ns0-rthlYrBU can reach ns1-rthlYrBU and ns2-rthlYrBU
>   PASS: ping to ns1-rthlYrBU was ip NATted to ns2-rthlYrBU
>   PASS: ping to ns1-rthlYrBU OK after ip nat output chain flush
>   PASS: ipv6 ping to ns1-rthlYrBU was ip6 NATted to ns2-rthlYrBU
>   2023/02/27 04:11:03 socat[6055] E connect(5, AF=2 10.0.1.99:2000, 16): Connection refused
>   ERROR: inet port rewrite
> 
> After the fix:
>   # ./nft_nat.sh
>   PASS: netns routing/connectivity: ns0-9sPJV6JJ can reach ns1-9sPJV6JJ and ns2-9sPJV6JJ
>   PASS: ping to ns1-9sPJV6JJ was ip NATted to ns2-9sPJV6JJ
>   PASS: ping to ns1-9sPJV6JJ OK after ip nat output chain flush
>   PASS: ipv6 ping to ns1-9sPJV6JJ was ip6 NATted to ns2-9sPJV6JJ
>   PASS: inet port rewrite without l3 address

Applied, thanks



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