I have gathered required log as you mentioned:
Output of journalctl -b -u systemd-resolved --no-pager( please note: after the
first read, link will disappear )
Output of dig:
; <<>> DiG
Added log as attachment
** Attachment added: "pcap.log"
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Thank you for the explanation, I have gathered dns.pcap file with the
** Attachment added: "dns (1).pcap"
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Thank you for the detailed explanation.
Let me clarify some things here:
1) In the initial reply, I provided two types of reponses:
- A successful one, that goes right through EDNS0 with UDP payload size 4096
- An unsuccessful one, that goes through the local stub resolver, but with udp
Public bug reported:
Description:Ubuntu 18.04.4 LTS
+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP
+GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN
Thank you for the answer. We are reffering to the local stub resolver(
127.0.0.53 ). As a workaround we have created symbolic link:
sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf
However, with the local stub resolver is still not working.
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