Saya mendapatkan banyak pesan ini di /var/log/syslog pada instalasi baru ubuntu 18.04 saya di kotak virtual melalui host windows 10. Saya mendapatkannya di instalasi ubuntu saya sebelumnya di mesin yang sama dan mencoba semua jenis solusi yang saya temukan di internet (seperti mengganti yang diselesaikan dengan bind9) tanpa hasil, yaitu bind9 memiliki masalah dalam menyelesaikan host. Hal ini membuat penjelajahan dan perangkat lunak lain yang menggunakan internet menjadi lambat.
Perhatikan bahwa masalah terjadi dengan 8.8.8.8 serta server dns internal pada 10.255.255.0.
Saya menggunakan kotak virtual terbaru untuk menjalankan ubuntu 18.04 terbaru saya. Ada pekerjaan di sekitar untuk ini? Sejauh ini saya mencoba:
- mengganti systemd-resolved dengan bind9 (bind9 memiliki masalah untuk diselesaikan, dan resolusi dns lambat)
- menghapus tautan simbolik /etc/resolved.conf dan nilai hardcoding ke dalam file tersebut
-
mengatur resolusi dns untuk menggunakan 8.8.8.8 (masalah yang sama)
Sep 20 11:23:21 kkpc systemd-resolved[553]: Using degraded feature set (UDP) for DNS server 10.255.255.0. Sep 20 11:23:26 kkpc systemd-resolved[553]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. Sep 20 11:23:30 kkpc systemd-resolved[553]: Using degraded feature set (TCP) for DNS server 10.255.255.0. Sep 20 11:23:35 kkpc systemd-resolved[553]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. Sep 20 11:23:40 kkpc systemd-resolved[553]: Using degraded feature set (UDP) for DNS server 10.255.255.0. Sep 20 11:23:40 kkpc systemd-resolved[553]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. Sep 20 11:23:48 kkpc systemd-resolved[553]: message repeated 3 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] Sep 20 11:23:51 kkpc systemd-resolved[553]: Using degraded feature set (TCP) for DNS server 10.255.255.0. Sep 20 11:23:55 kkpc systemd-resolved[553]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. Sep 20 11:24:02 kkpc systemd-resolved[553]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. Sep 20 11:24:05 kkpc systemd-resolved[553]: Using degraded feature set (UDP) for DNS server 10.255.255.0. Sep 20 11:24:05 kkpc systemd-resolved[553]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. Sep 20 11:24:15 kkpc systemd-resolved[553]: message repeated 2 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] Sep 20 11:24:21 kkpc systemd-resolved[553]: Using degraded feature set (TCP) for DNS server 10.255.255.0. Sep 20 11:24:25 kkpc systemd-resolved[553]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. Sep 20 11:24:56 kkpc systemd-resolved[553]: message repeated 6 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.]