Name resolution failure

sangamo · 2017-09-26 11:23:37

I just installed Arch linux. I installed Gnome with it. My Internet works fine when i use usb tethering with my phone. It fails name resolution when I connect it to wifi.
I know this question is asked so many times but as far as I know I coundn't find any working solution. Thanks in advance.

/* i addr */
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp12s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
    link/ether e0:db:55:e5:10:95 brd ff:ff:ff:ff:ff:ff
3: wlp2s0b1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether a4:17:31:6c:16:6f brd ff:ff:ff:ff:ff:ff
    inet 192.168.43.131/24 brd 192.168.43.255 scope global dynamic wlp2s0b1
       valid_lft 1965sec preferred_lft 1965sec
    inet6 2405:205:150e:2423:4a52:7e4:57fc:580d/64 scope global mngtmpaddr noprefixroute 
       valid_lft forever preferred_lft forever
    inet6 fe80::a617:31ff:fe6c:166f/64 scope link 
       valid_lft forever preferred_lft forever
5: enp0s20u2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000
    link/ether a6:ea:79:8e:2d:53 brd ff:ff:ff:ff:ff:ff
    inet 192.168.42.165/24 brd 192.168.42.255 scope global dynamic enp0s20u2
       valid_lft 2424sec preferred_lft 2424sec
    inet6 2405:205:150e:2423:939:5392:edf0:f674/64 scope global noprefixroute 
       valid_lft forever preferred_lft forever
    inet6 2405:205:150e:2423:547a:2765:995:b8ec/64 scope global mngtmpaddr noprefixroute 
       valid_lft forever preferred_lft forever
    inet6 fe80::2a3b:9bbb:902c:cefc/64 scope link 
       valid_lft forever preferred_lft forever

/***** ip link *****/

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp12s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
    link/ether e0:db:55:e5:10:95 brd ff:ff:ff:ff:ff:ff
3: wlp2s0b1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000
    link/ether a4:17:31:6c:16:6f brd ff:ff:ff:ff:ff:ff
5: enp0s20u2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000
    link/ether a6:ea:79:8e:2d:53 brd ff:ff:ff:ff:ff:ff


/***** resolve conf ****/

# Generated by resolvconf
nameserver 8.8.8.8
nameserver 2405:200:800::1
nameserver 192.168.43.1
nameserver 8.8.4.4



[sangam@sangamos ~]$ ping -c5 192.168.43.1
PING 192.168.43.1 (192.168.43.1) 56(84) bytes of data.
From 192.168.43.131 icmp_seq=1 Destination Host Unreachable
From 192.168.43.131 icmp_seq=2 Destination Host Unreachable
From 192.168.43.131 icmp_seq=3 Destination Host Unreachable
From 192.168.43.131 icmp_seq=4 Destination Host Unreachable
From 192.168.43.131 icmp_seq=5 Destination Host Unreachable

but the wifi is connected.

Please help

jasonwryan · 2017-09-26 15:07:45

Connect manually and identify exactly where it is failing.

seth · 2017-09-26 17:22:24

Why do you think this is a problem with DNS?
Your ping return just says that your desired gateway (and 3rd resolver) is unreachable.

Next thing is that you've two ethernet devices and one WIFi and your WiFi is in another subnet than the only other connected ethernet.
This doesn't smell like an ordinary desktop system setup; you'll have to elaborate on what you're trying to achieve and how exactly you configured that.

Arch Linux

#1 2017-09-26 11:23:37

Name resolution failure

#2 2017-09-26 15:07:45

Re: Name resolution failure

#3 2017-09-26 17:22:24

Re: Name resolution failure

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