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Date: Sat, 2 Apr 2022 16:14:10 +0200 From: Florian Westphal <fw@...len.de> To: Jaco Kroon <jaco@....co.za> Cc: Neal Cardwell <ncardwell@...gle.com>, Florian Westphal <fw@...len.de>, Eric Dumazet <edumazet@...gle.com>, LKML <linux-kernel@...r.kernel.org>, Netdev <netdev@...r.kernel.org>, Yuchung Cheng <ycheng@...gle.com>, Wei Wang <weiwan@...gle.com> Subject: Re: linux 5.17.1 disregarding ACK values resulting in stalled TCP connections Jaco Kroon <jaco@....co.za> wrote: > Including sysctl net.netfilter.nf_conntrack_log_invalid=6- which > generates lots of logs, something specific I should be looking for? I > suspect these relate: > > [Sat Apr 2 10:31:53 2022] nf_ct_proto_6: SEQ is over the upper bound > (over the window of the receiver) IN= OUT=bond0 > SRC=2c0f:f720:0000:0003:d6ae:52ff:feb8:f27b > DST=2a00:1450:400c:0c08:0000:0000:0000:001a LEN=2928 TC=0 HOPLIMIT=64 > FLOWLBL=867133 PROTO=TCP SPT=48920 DPT=25 SEQ=2689938314 ACK=4200412020 > WINDOW=447 RES=0x00 ACK PSH URGP=0 OPT (0101080A2F36C1C120EDFB91) UID=8 > GID=12 I thought this had "liberal mode" enabled for tcp conntrack? The above implies its off.
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