No internet after upgrade to 17.10

[beameup]

I'm a sitting duck over here too after the upgrade. The only thing in my network interfaces file is

auto lo
iface lo inet loopback

I can ping the router but that's it. I'm not getting any DNS resolve

Should I have auto eth0 in there too?

[chili555]

We'd like to see the actual reply to:

ping -c3 8.8.8.8

Should I have auto eth0 in there too?

Not usually; Network Manager should do the job quite well.

[beameup]

ifconfig -a

 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.28  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::290:f5ff:fef9:7088  prefixlen 64  scopeid 0x20<link>
        ether 00:90:f5:f9:70:88  txqueuelen 1000  (Ethernet)
        RX packets 4650  bytes 775566 (775.5 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4396  bytes 491696 (491.6 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 6795  bytes 513537 (513.5 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 6795  bytes 513537 (513.5 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlan0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether a0:88:69:39:b3:45  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ping results

 ping -c3 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=56 time=31.3 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=56 time=39.7 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=56 time=37.9 ms

--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 31.358/36.343/39.750/3.603 ms

ping -c3 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=7.83 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=6.03 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=3.97 ms

ping -c3 www.ubuntu.com
ping: www.ubuntu.com: Name or service not known

iwconfig

iwconfig
wlan0     IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=off   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          
lo        no wireless extensions.

eth0      no wireless extensions.

Thanks.

[chili555]

CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 62893167-6aa4-3d7e-a6f4-423ca687cb5f | Wired connection 1
IP4.ADDRESS[1]: 192.168.1.178/24
IP4.GATEWAY: 192.168.1.1
IP4.DNS[1]: 8.8.8.8
IP4.DNS[2]: 8.8.4.4

Do these settings come from the router; i.e. is Network Manager set for DHCP or are there custom settings that you've added?

ping -c3 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=56 time=31.3 ms

You are getting to the internet, but no names are resolved.

Interesting.

BTW, I have upgraded to 17.10 and everything works as expected. I don't suspect a systemic issue or bug, so far.

[beameup]

No custom settings, DHCP is set to automatic.
I get a ? across my network icon. Wireless doesn't work either.
But I can get across my internal network OK
I rebooted the router for good measure.

the broadcast IP is internal, that should be my external IP.

[beameup]

Now it gets interesting.
I use PIA vpn. Just turned it on and I'm connected to the internet. Go figure.

[wildmanne39]

Please do not hijack someone else's thread it is better to start your own so both of you can get the help you deserve.

Please use code tags - if you are using New Reply button - highlight text and use the # button in the text box header.

If using Quick Reply then [code] at the beginning and [/code] at the end.

Thanks

[beameup]

Please do not hijack someone else's thread it is better to start your own so both of you can get the help you deserve.

Please use code tags - if you are using New Reply button - highlight text and use the # button in the text box header.

If using Quick Reply then [code] at the beginning and [/code] at the end.

Thanks

My apologies. It looked like the same issue to me.

[beameup]

Well this just keeps getting weirder for me.
I removed PIA and it didn't change anything. I removed the network connection via NM and added another.
I tried OpenDNS in the settings. Reboot, reboot, still no connection.
What's really strange is that I can open a Kubuntu Virtual Machine on the same laptop (System76 Kudo) and it will connect to the internet no problem.
VirtualBox using a bridged connection. Settings are identical to the main machine.
So something is blocking that network adapter mac address maybe?

I also have a vanilla Ubuntu installed on a virtual machine on my MacMini. Just testing the beta out. Guess what? No network connection today.
Totally different machine. I have no idea? But that one is easy. I can just remove it.

So in the meantime, I'll just put PIA back on and let it load at startup until I can sort it out.

[beameup]

Fixed! This link

https://askubuntu.com/questions/622470/dns-probe-finished-bad-config-error-in-ubuntu-14-04/622493#622493

These commands

sudo dpkg-reconfigure resolvconf

Say yes to "prepare /etc/resolve.conf for dynamic updates?"

sudo reboot