Hello, I tried to get DNS packets using :
$ sudo tcpdump -i lxcbr0 -l -vvv dst host 10.0.3.1 and dst port 53 |tee /tmp/tcpdump-dns I then wait until systemd-resolved ate 100% of CPU. But at this time (unfortunately when I noticed it, it may have been eaten CPU for quite a while). However I can't see any strange exchange between systemd- resolved and dnsmasq. I attach all the packets captured by tcpdump. I'm not an expert in networks topics but I'm at ease with linux and cli commands, so feel free to tell me which experiment you would like me to run. ** Attachment added: "tcpdump session between dnsmasq and systemd-resolved" https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1721092/+attachment/5044944/+files/tcpdump-dns -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1721092 Title: systemd-resolved and dns-masq make CPU 100% when using lxc name resolution To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1721092/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
