systemd-resolved

M. Piscaer debian at masterpe.nl
Thu Dec 14 12:27:04 UTC 2017



On 14-12-17 13:15, Tom H wrote:
> On Wed, Dec 13, 2017 at 8:00 AM, M. Piscaer via ubuntu-users
> <ubuntu-users at lists.ubuntu.com> wrote:
>>
>> On an Ubuntu 17.04 system I try to surf to www.ziggogo.tv. In chrome I
>> get the message:
>>
>> This site can’t be reached
>> www.ziggogo.tv’s server DNS address could not be found.
>>
>> DNS_PROBE_FINISHED_NXDOMAIN
>>
>> Firefox has also the same issue. When I try to ping the addresses I
>> get an error:
> 
> What's the output of
> 
> ls -l /etc/resolv.conf
> cat /etc/resolv.conf
> grep hosts /etc/nsswitch.conf
> systemd-resolve --status
> dig
> 


:~$ ls -l /etc/resolv.conf
lrwxrwxrwx 1 root root 29 dec 13 13:17 /etc/resolv.conf ->
../run/resolvconf/resolv.conf

:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by
resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
# 127.0.0.53 is the systemd-resolved stub resolver.
# run "systemd-resolve --status" to see details about the actual
nameservers.

nameserver 127.0.0.53

:~$ grep hosts /etc/nsswitch.conf
hosts:          mdns4_minimal resolve [!UNAVAIL=return] dns myhostname

:~$ systemd-resolve --status
Global
          DNSSEC NTA: 10.in-addr.arpa
                      16.172.in-addr.arpa
                      168.192.in-addr.arpa
                      17.172.in-addr.arpa
                      18.172.in-addr.arpa
                      19.172.in-addr.arpa
                      20.172.in-addr.arpa
                      21.172.in-addr.arpa
                      22.172.in-addr.arpa
                      23.172.in-addr.arpa
                      24.172.in-addr.arpa
                      25.172.in-addr.arpa
                      26.172.in-addr.arpa
                      27.172.in-addr.arpa
                      28.172.in-addr.arpa
                      29.172.in-addr.arpa
                      30.172.in-addr.arpa
                      31.172.in-addr.arpa
                      corp
                      d.f.ip6.arpa
                      home
                      internal
                      intranet
                      lan
                      local
                      private
                      test

Link 7 (lxcbr0)
      Current Scopes: none
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no

Link 6 (virbr0-nic)
      Current Scopes: none
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no

Link 5 (virbr0)
      Current Scopes: none
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no

Link 4 (wlp2s0)
      Current Scopes: none
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no

Link 3 (wwp0s20f0u2i12)
      Current Scopes: none
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no

Link 2 (enp0s31f6)
      Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no
         DNS Servers: 172.17.24.21
          DNS Domain: masterpe.nl

:~$ dig

; <<>> DiG 9.10.3-P4-Ubuntu <<>>
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39021
;; flags: qr rd ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			507806	IN	NS	a.root-servers.net.
.			507806	IN	NS	e.root-servers.net.
.			507806	IN	NS	d.root-servers.net.
.			507806	IN	NS	m.root-servers.net.
.			507806	IN	NS	b.root-servers.net.
.			507806	IN	NS	i.root-servers.net.
.			507806	IN	NS	h.root-servers.net.
.			507806	IN	NS	j.root-servers.net.
.			507806	IN	NS	c.root-servers.net.
.			507806	IN	NS	l.root-servers.net.
.			507806	IN	NS	k.root-servers.net.
.			507806	IN	NS	g.root-servers.net.
.			507806	IN	NS	f.root-servers.net.

;; Query time: 5 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Thu Dec 14 13:24:12 CET 2017
;; MSG SIZE  rcvd: 239

Kind regards,

Michiel Piscaer

-- 



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