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Ubuntu DNSルックアップの失敗

ネットワーク内のマシンでホストされている仮想マシンにubuntuをインストールして設定した人がいます。最近、すべてのDNSルックアップが失敗することに気付きましたが、これに対する解決策を見つけることができません。多数のネームサーバーを試してみましたが、googleからの提案でinterfacesファイルを数百回編集しましたが、何も機能しません。

以下はいくつかの情報であり、誰かが何かアイデアを持っているなら、私はそれを大いに感謝します。ありがとう

nslookup

administrator@redmine:~$ nslookup google.com
;; connection timed out; no servers could be reached

administrator@redmine:~$ nslookup localhost
;; connection timed out; no servers could be reached

nslookupのtcpdump [tcpdump出力を取得するために3つのルックアップが必要]-編集済み

    administrator@redmine:~$ Sudo tcpdump -vvv -i any port 53
tcpdump: listening on any, link-type LINUX_SLL (Linux cooked), capture size 96 bytes
10:26:51.965297 IP (tos 0x0, ttl 64, id 9167, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.56365 > 208.67.222.222.domain: [bad udp cksum 988f!] 61133+ A? google.com. (28)
10:26:51.965595 IP (tos 0x0, ttl 64, id 25587, offset 0, flags [DF], proto UDP (17), length 73)
    10.80.15.5.57551 > 208.67.222.222.domain: [bad udp cksum ff0c!] 9477+ PTR? 222.222.67.208.in-addr.arpa. (45)
10:26:52.965437 IP (tos 0x0, ttl 64, id 37960, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.45006 > 208.67.220.220.domain: [bad udp cksum fbbf!] 61133+ A? google.com. (28)
10:26:56.967724 IP (tos 0x0, ttl 64, id 26087, offset 0, flags [DF], proto UDP (17), length 73)
    10.80.15.5.38794 > 208.67.220.220.domain: [bad udp cksum 485a!] 9477+ PTR? 222.222.67.208.in-addr.arpa. (45)
10:26:57.965482 IP (tos 0x0, ttl 64, id 9168, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.56365 > 208.67.222.222.domain: [bad udp cksum 988f!] 61133+ A? google.com. (28)
10:26:58.965605 IP (tos 0x0, ttl 64, id 37961, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.45006 > 208.67.220.220.domain: [bad udp cksum fbbf!] 61133+ A? google.com. (28)
10:27:01.972798 IP (tos 0x0, ttl 64, id 25588, offset 0, flags [DF], proto UDP (17), length 73)
    10.80.15.5.57551 > 208.67.222.222.domain: [bad udp cksum ff0c!] 9477+ PTR? 222.222.67.208.in-addr.arpa. (45)
10:27:03.965726 IP (tos 0x0, ttl 64, id 9169, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.56365 > 208.67.222.222.domain: [bad udp cksum 988f!] 61133+ A? google.com. (28)
10:27:04.965844 IP (tos 0x0, ttl 64, id 37962, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.45006 > 208.67.220.220.domain: [bad udp cksum fbbf!] 61133+ A? google.com. (28)
10:27:06.974911 IP (tos 0x0, ttl 64, id 26088, offset 0, flags [DF], proto UDP (17), length 73)
    10.80.15.5.38794 > 208.67.220.220.domain: [bad udp cksum 485a!] 9477+ PTR? 222.222.67.208.in-addr.arpa. (45)
10:27:11.255383 IP (tos 0x0, ttl 64, id 9170, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.46416 > 208.67.222.222.domain: [bad udp cksum 1dab!] 64037+ A? google.com. (28)
10:27:11.980136 IP (tos 0x0, ttl 64, id 27588, offset 0, flags [DF], proto UDP (17), length 69)
    10.80.15.5.41940 > 208.67.222.222.domain: [bad udp cksum 12f8!] 57952+ PTR? 5.15.80.10.in-addr.arpa. (41)
10:27:12.255497 IP (tos 0x0, ttl 64, id 37963, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.34434 > 208.67.220.220.domain: [bad udp cksum efdd!] 64037+ A? google.com. (28)
10:27:16.983093 IP (tos 0x0, ttl 64, id 28089, offset 0, flags [DF], proto UDP (17), length 69)
    10.80.15.5.33410 > 208.67.220.220.domain: [bad udp cksum 691d!] 57952+ PTR? 5.15.80.10.in-addr.arpa. (41)
10:27:17.255564 IP (tos 0x0, ttl 64, id 9171, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.46416 > 208.67.222.222.domain: [bad udp cksum 1dab!] 64037+ A? google.com. (28)
10:27:18.255675 IP (tos 0x0, ttl 64, id 37964, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.34434 > 208.67.220.220.domain: [bad udp cksum efdd!] 64037+ A? google.com. (28)
10:27:21.988171 IP (tos 0x0, ttl 64, id 27589, offset 0, flags [DF], proto UDP (17), length 69)
    10.80.15.5.41940 > 208.67.222.222.domain: [bad udp cksum 12f8!] 57952+ PTR? 5.15.80.10.in-addr.arpa. (41)
10:27:23.255805 IP (tos 0x0, ttl 64, id 9172, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.46416 > 208.67.222.222.domain: [bad udp cksum 1dab!] 64037+ A? google.com. (28)
10:27:24.255925 IP (tos 0x0, ttl 64, id 37965, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.34434 > 208.67.220.220.domain: [bad udp cksum efdd!] 64037+ A? google.com. (28)
10:27:26.991768 IP (tos 0x0, ttl 64, id 28090, offset 0, flags [DF], proto UDP (17), length 69)
    10.80.15.5.33410 > 208.67.220.220.domain: [bad udp cksum 691d!] 57952+ PTR? 5.15.80.10.in-addr.arpa. (41)
10:27:31.165191 IP (tos 0x0, ttl 64, id 9173, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.47147 > 208.67.222.222.domain: [bad udp cksum 55b3!] 61202+ A? google.com. (28)
10:27:31.997034 IP (tos 0x0, ttl 64, id 29590, offset 0, flags [DF], proto UDP (17), length 73)
    10.80.15.5.37414 > 208.67.222.222.domain: [bad udp cksum 3353!] 11646+ PTR? 220.220.67.208.in-addr.arpa. (45)
10:27:32.165303 IP (tos 0x0, ttl 64, id 37966, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.57432 > 208.67.220.220.domain: [bad udp cksum 2c8f!] 61202+ A? google.com. (28)
10:27:36.999487 IP (tos 0x0, ttl 64, id 30090, offset 0, flags [DF], proto UDP (17), length 73)
    10.80.15.5.34374 > 208.67.220.220.domain: [bad udp cksum 1763!] 11646+ PTR? 220.220.67.208.in-addr.arpa. (45)
10:27:37.165381 IP (tos 0x0, ttl 64, id 9174, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.47147 > 208.67.222.222.domain: [bad udp cksum 55b3!] 61202+ A? google.com. (28)
10:27:38.165507 IP (tos 0x0, ttl 64, id 37967, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.57432 > 208.67.220.220.domain: [bad udp cksum 2c8f!] 61202+ A? google.com. (28)
10:27:42.004572 IP (tos 0x0, ttl 64, id 29591, offset 0, flags [DF], proto UDP (17), length 73)
    10.80.15.5.37414 > 208.67.222.222.domain: [bad udp cksum 3353!] 11646+ PTR? 220.220.67.208.in-addr.arpa. (45)
10:27:43.165623 IP (tos 0x0, ttl 64, id 9175, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.47147 > 208.67.222.222.domain: [bad udp cksum 55b3!] 61202+ A? google.com. (28)
10:27:44.165729 IP (tos 0x0, ttl 64, id 37968, offset 0, flags [none], proto UDP (17), length 56)
    10.80.15.5.57432 > 208.67.220.220.domain: [bad udp cksum 2c8f!] 61202+ A? google.com. (28)
10:27:47.009170 IP (tos 0x0, ttl 64, id 30091, offset 0, flags [DF], proto UDP (17), length 73)
    10.80.15.5.34374 > 208.67.220.220.domain: [bad udp cksum 1763!] 11646+ PTR? 220.220.67.208.in-addr.arpa. (45)

/ etc/hosts

administrator@redmine:~$ cat /etc/hosts
127.0.0.1       localhost localhost.localdomain redmine redmine.hiddendomain.com

/ etc/resolv.conf

administrator@redmine:~$ cat /etc/resolv.conf
### OPENDNS ###
nameserver 208.67.222.222
nameserver 208.67.220.220

### GOOGLE NS ###
#nameserver 8.8.8.8
#nameserver 8.8.4.4

/ etc/network/interfaces

administrator@redmine:~$ cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

#The primary network
auto eth0
iface eth0 inet static
address 10.80.15.5
netmask 255.255.255.0
network 10.80.15.0
broadcast 10.80.15.255
gateway 10.80.15.254

## Try this just in case resolv.conf isn't being read properly
dns-nameserver 8.8.8.8

/ etc/nsswitch.conf

cat /etc/nsswitch.conf
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.

passwd:         compat
group:          compat
shadow:         compat

hosts:          files dns
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

/ etc/Host.conf

multi on

iはtelnetできるので、ファイアウォールではありません（しかし、tcpdumpですでに知っています）

administrator@redmine:~$ telnet 8.8.8.8 53
Trying 8.8.8.8...
Connected to 8.8.8.8.
Escape character is '^]'.
Connection closed by foreign Host.

更新：愚かな間違いを見つけてくれたladadada *に感謝します。しかし、今は元の問題に戻っています。 （tcpdumpからわかるように）正しいDNSサーバーを使用していますが、nslookup/Digはまだサーバーに到達できなかったと言っています。私はテストして、ポート53で両方のopendnsサーバーにtelnetできます。奇妙なことの1つは、tcpdumpから出力を取得する前にnslookupを3回実行する必要があることです。

もう一度、どんな助け、アドバイス、などいただければ幸いです。

linuxubuntudomain-name-systeminternal-dnsnslookup
5
Lee

きみの /etc/resolv.confは次のようになります。

### OPENDNS ###
nameserver 208.67.222.222
nameserver 208.67.220.220

### GOOGLE NS ###
#nameserver 8.8.8.8
#nameserver 8.8.4.4

nameserverキーワードがなければ、IPアドレス自体は何も意味しません。

5
Ladadadada