我最近升级了系统,现在我看到一个非常奇怪的错误,我能做些什么来解决这个问题吗?:
nslookup 8.8.8.8
../../../../lib/isc/unix/socket.c:2135: internal_send: 192.168.43.232#53: Required key not available
../../../../lib/isc/unix/socket.c:2137: unable to convert errno to isc_result: 126: Required key not available
8.8.8.8.in-addr.arpa name = dns.google.
Authoritative answers can be found from:
编辑:
不幸的是,我没有注意到哪个版本,因为它是通过软件中心应用程序完成的,我正在运行 Ubuntu 18.04 ( pop_os ) 的一个变体
systemd-resolve --status
:
Global
DNS Servers: 192.168.43.220
Link 3 (wlp113s0)
Current Scopes: DNS
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
DNS Servers: 192.168.43.232
2600:1014:b02f:45d5::c3
nmap -p 53 -Pn 192.168.43.232
Starting Nmap 7.60 ( https://nmap.org ) at 2019-07-26 14:00 CDT
Nmap scan report for 192.168.43.232
Host is up.
PORT STATE SERVICE
53/tcp filtered domain
Nmap done: 1 IP address (1 host up) scanned in 2.03 seconds
dig 8.8.8.8
:
../../../../lib/isc/unix/socket.c:2135: internal_send: 192.168.43.232#53: Required key not available
../../../../lib/isc/unix/socket.c:2137: unable to convert errno to isc_result: 126: Required key not available
; <<>> DiG 9.11.3-1ubuntu1.8-Ubuntu <<>> 8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 49678
;; flags: qr aa rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;8.8.8.8. IN A
;; ANSWER SECTION:
8.8.8.8. 0 IN A 8.8.8.8
;; Query time: 6 msec
;; SERVER: 2600:1014:b02f:45d5::c3#53(2600:1014:b02f:45d5::c3)
;; WHEN: Fri Jul 26 14:03:02 CDT 2019
;; MSG SIZE rcvd: 41
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- 签名的内核模块 - “未使用可信密钥签名”
- http://man7.org/linux/man-pages/man2/request_key.2.html
可能的解决方案
- 尝试解锁端口 53。
- 我遇到了一个问题,docker-compose 对网络做了一些奇怪的事情,所以我跑了
docker-compose down && docker-compose up
答案1
一个问题是您正在过滤 TCP 端口 53。(DNS 使用 UDP 进行简短的快速查询,使用 TCP 进行较长的消息。)取消阻止并重试。