マルチキャストDNS（MDNS）の問題により、resolv.confファイルに重複行が発生する可能性がありますか？
たとえば、次のresolv.confファイルがあります。
more /etc/resolv.conf
search coronplesdf.hh.com
server 108.16.1.71
domain coronplesdf.hh.com
domain coronplesdf.hh.com
domain coronplesdf.hh.com
domain coronplesdf.hh.com
domain coronplesdf.hh.com
domain coronplesdf.hh.com
domain coronplesdf.hh.com
domain coronplesdf.hh.com
domain coronplesdf.hh.com
domain coronplesdf.hh.com
例えば、dmesgから得られた情報は
[6484420.812643] raid6: using avx2x2 recovery algorithm
[6484420.859086] Btrfs loaded
[6484426.278636] nr_pdflush_threads exported in /proc is scheduled for removal
[6484708.776239] ixgbe 0000:04:00.0: invalid short VPD tag 06 at offset 4
[6900952.098901] perf: interrupt took too long (6247 > 6167), lowering kernel.perf_event_max_sample_rate to 32000
[7372848.819396] Peer 0000:0000:0000:0000:0000:ffff:0a15:f030:1054/8042 unexpectedly shrunk window 3002395993:3002395997 (repaired)
[8139485.039423] Turbo disabled by BIOS or unavailable on processor
[8380300.891343] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380320.890541] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380440.896206] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380460.895001] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380463.207397] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380467.316531] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380468.363352] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380469.332044] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380489.330943] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380509.329849] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380529.328678] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380549.468256] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380569.326474] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380589.340946] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380609.339969] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380619.870472] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380620.964216] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380621.979847] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380641.869255] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
[8380661.883737] UDP: bad checksum. From 73.2.33.11:5353 to 82.2.33.1:5353 ulen 69
ベストアンサー1
レイヤ2ネットワークパフォーマンスの最適化/特異点は重要ではありませんresolv.conf。一部の devops スクリプトに対する一部の不等性操作は、複数の呼び出しにわたってドメイン行を追加/追加します。
さらに、mDNSは中央ポイントを使用せず、通常のDNSとは無関係です。通信するデバイスは、ネットワーク全体に名前/ IPアドレスを通知します（mはマルチキャストを表します）。私はDNSのすべてを所有しているので、通常私のエンタープライズサーバーでmDNSデーモン/avahiを停止します。