root@lp1880258-g:~# host afhjisrfljsdirfj.com
Host afhjisrfljsdirfj.com not found: 3(NXDOMAIN)
root@lp1880258-g:~# journalctl -b -u systemd-resolved --no-pager
...
Mar 09 18:07:46 lp1880258-g systemd-resolved[624]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Mar 09 18:09:11 lp1880258-g systemd-resolved[624]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Mar 09 18:09:14 lp1880258-g systemd-resolved[624]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
root@lp1880258-g:~# dpkg -l systemd|grep systemd
ii systemd 246.6-1ubuntu1.2 amd64 system and service manager
root@lp1880258-g:~# host afhjisrfljsdirfj.com
Host afhjisrfljsdirfj.com not found: 3(NXDOMAIN)
root@lp1880258-g:~# host afhjisrfljsdirfj.com
Host afhjisrfljsdirfj.com not found: 3(NXDOMAIN)
root@lp1880258-g:~# host afhjisrfljsdirfj.com
Host afhjisrfljsdirfj.com not found: 3(NXDOMAIN)
root@lp1880258-g:~# journalctl -b -u systemd-resolved --no-pager | grep NXDOMAIN
root@lp1880258-g:~#
with -release version of systemd:
root@lp1880258-g:~# host afhjisrfljsdirf j.com j.com not found: 3(NXDOMAIN)
Host afhjisrfljsdirf
root@lp1880258-g:~# journalctl -b -u systemd-resolved --no-pager resolved[ 624]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. resolved[ 624]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. resolved[ 624]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
...
Mar 09 18:07:46 lp1880258-g systemd-
Mar 09 18:09:11 lp1880258-g systemd-
Mar 09 18:09:14 lp1880258-g systemd-
root@lp1880258-g:~# dpkg -l systemd|grep systemd j.com j.com not found: 3(NXDOMAIN) j.com j.com not found: 3(NXDOMAIN) j.com j.com not found: 3(NXDOMAIN)
ii systemd 246.6-1ubuntu1.2 amd64 system and service manager
root@lp1880258-g:~# host afhjisrfljsdirf
Host afhjisrfljsdirf
root@lp1880258-g:~# host afhjisrfljsdirf
Host afhjisrfljsdirf
root@lp1880258-g:~# host afhjisrfljsdirf
Host afhjisrfljsdirf
root@lp1880258-g:~# journalctl -b -u systemd-resolved --no-pager | grep NXDOMAIN
root@lp1880258-g:~#