Hi Eric,
Thanks for the reply.
>> >> dnl means the datapath didn't process the ct_clear action. Ending in
>> >> SYN_RECV
>> >> dnl (OVS maps to ESTABLISHED) means the initial frame was committed, but
>> >> not a
>> >> dnl second time after the FIP translation (because ct_clear didn't
>> >> occur).
>> >> -NS_CHECK_EXEC([at_ns1], [echo "foobar" |nc $NC_EOF_OPT 10.254.254.1])
>> >> +NS_CHECK_EXEC([at_ns1], [echo "foobar" |nc $NC_EOF_OPT 10.254.254.1
>> >> 1234])
>> >
>> > Are you saying it works for you with the explicit port?
Yes, it works for me with explicit port (sorry I didn't answer this question)
>> > If not, can you show the error?
>> >
>> > FWIW, nmap-ncat defaults to 31337. I guess other nc implementations may
>> > be different.
>>
>> The error message:
>>
>> 83: conntrack - floating IP FAILED
>> (system-traffic.at:4055)
>> +This is nc from the netcat-openbsd package. An alternative nc is available
>> +in the netcat-traditional package.
>> +usage: nc [-46bCDdhjklnrStUuvZz] [-I length] [-i interval] [-O length]
>> + [-P proxy_username] [-p source_port] [-q seconds] [-s source]
>> + [-T toskeyword] [-V rtable] [-w timeout] [-X proxy_protocol]
>> + [-x proxy_address[:port]] [destination] [port]
>> ./system-traffic.at:4055: exit code was 1, expected 0
>>
>> on my system (ubuntu 1604), it is using the BSD
>> tests/atlocal.in: NC_EOF_OPT="-q 1 -w 5"
>
> There are other test cases that use NC_EOF_OPT, so I expect those are
> failing for you as well. Can you verify?
>
So my other test cases work OK since it has explicit port number.
> Indeed, OpenBSD nc(1) man page does not list the -q option. Nor do the
> other BSDs. I don't know why that option is being used. The first
Actually my BSD nc (netcat-traditional package) has -q options.
> evidence of it's usage seems to be 9ac0aadab9f9 ("conntrack: Add support
> for NAT.").
I think "-q 1" is mentioned at b54971f72ec ("system-traffic: use
appropriate nc options for installed version")
William
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