Hi Frode,
I went through the captures I have and effectively, if we filter out the
packets where the srcport != 53 or dstport != 6081 , we end up only with
valid dns traffic.
I believe this explains what we are seeing, and the other findings you
did regards the missing flows, we can say with certainty that the DNS
issues we are seeing are only a symptom of instances losing North-South
traffic. I'm closing the bug as Invalid.
$ for PCAP in *.pcap; do echo -e "$PCAP\t$(tshark -r $PCAP | grep -i "unknown"
| wc -l)\t$(tshark -r $PCAP 'udp.dstport ne 6081' | grep -i unknown | wc
-l)\t$(tshark -r $PCAP 'udp.srcport ne 53' | grep -i unknown | wc -l)";done
dns-port-machine-0.pcap 90 0 0
dns-port-machine-10.pcap 104 0 0
dns-port-machine-11.pcap 26 0 0
dns-port-machine-12.pcap 0 0 0
dns-port-machine-13.pcap 0 0 0
dns-port-machine-2.pcap 6 0 0
dns-port-machine-3.pcap 72 0 0
dns-port-machine-4.pcap 0 0 0
dns-port-machine-5.pcap 59 0 0
dns-port-machine-6.pcap 68 0 0
dns-port-machine-7.pcap 46 0 0
dns-port-machine-8.pcap 104 0 0
dns-port-machine-9.pcap 32 0 0
** Changed in: ovn (Ubuntu)
Status: Triaged => Invalid
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https://bugs.launchpad.net/bugs/1959847
Title:
Unknown operation (12) 0x0240 Unknown (7680)[Malformed Packet]
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