<magellanic> run some commands and get the outputs if it happens again, maybe: ip ro, ip addr, ping -c2 8.8.8.8, dig www.google.com, tracepath 8.8.8.8 While all is working ran above commands. Below is the results: ************************************************************** kerasen@kerasen-R509:~$ ip ro default via 10.0.0.1 dev ppp0 proto static metric 700 10.0.0.1 dev ppp0 proto kernel scope link src 10.251.57.106 metric 700 169.254.0.0/16 dev virbr0 scope link metric 1000 linkdown 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown kerasen@kerasen-R509:~$ ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 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: enp6s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 link/ether 00:13:77:e2:3f:9b brd ff:ff:ff:ff:ff:ff 3: wlp2s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 00:24:d2:4a:ec:50 brd ff:ff:ff:ff:ff:ff 4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0 valid_lft forever preferred_lft forever 5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 link/ether 52:54:00:cd:39:ae brd ff:ff:ff:ff:ff:ff 6: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 3 link/ppp inet 10.251.57.106 peer 10.0.0.1/32 scope global ppp0 valid_lft forever preferred_lft forever kerasen@kerasen-R509:~$ ping -c2 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=55 time=828 ms 64 bytes from 8.8.8.8: icmp_seq=2 ttl=55 time=827 ms --- 8.8.8.8 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 999ms rtt min/avg/max/mdev = 827.382/827.831/828.281/1.014 ms kerasen@kerasen-R509:~$ dig www.google.com ; <<>> DiG 9.10.3-P4-Ubuntu <<>> www.google.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46531 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 5 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;www.google.com. IN A ;; ANSWER SECTION: www.google.com. 53 IN A 172.217.23.4 ;; AUTHORITY SECTION: google.com. 37101 IN NS ns4.google.com. google.com. 37101 IN NS ns2.google.com. google.com. 37101 IN NS ns3.google.com. google.com. 37101 IN NS ns1.google.com. ;; ADDITIONAL SECTION: ns1.google.com. 240705 IN A 216.239.32.10 ns2.google.com. 241113 IN A 216.239.34.10 ns3.google.com. 241113 IN A 216.239.36.10 ns4.google.com. 225574 IN A 216.239.38.10 ;; Query time: 1314 msec ;; SERVER: 127.0.1.1#53(127.0.1.1) ;; WHEN: Sat Mar 11 12:08:26 SAST 2017 ;; MSG SIZE rcvd: 195 kerasen@kerasen-R509:~$ tracepath 8.8.8.8 1?: [LOCALHOST] pmtu 1500 1: no reply 2: 41.48.22.34 95.443ms 3: no reply 4: 10.228.233.193 84.543ms asymm 3 5: 41.48.16.1 66.590ms asymm 4 6: 41.48.0.2 75.681ms asymm 5 7: 41.48.1.1 99.641ms asymm 6 8: 41.48.253.1 93.627ms asymm 6 9: 41.48.253.37 73.648ms asymm 7 10: no reply 11: no reply 12: no reply 13: no reply 14: no reply 15: no reply 16: no reply 17: no reply 18: no reply 19: no reply 20: no reply 21: no reply 22: no reply 23: no reply 24: no reply 25: no reply 26: no reply 27: no reply 28: no reply 29: no reply 30: no reply Too many hops: pmtu 1500 Resume: pmtu 1500 kerasen@kerasen-R509:~$ ************************************************************** This after connection is lost and I reconnected below is the results: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kerasen@kerasen-R509:~$ ip ro default via 10.0.0.1 dev ppp0 proto static metric 700 10.0.0.1 dev ppp0 proto kernel scope link src 10.151.180.96 metric 700 169.254.0.0/16 dev virbr0 scope link metric 1000 linkdown 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown kerasen@kerasen-R509:~$ ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 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: enp6s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 link/ether 00:13:77:e2:3f:9b brd ff:ff:ff:ff:ff:ff 3: wlp2s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 00:24:d2:4a:ec:50 brd ff:ff:ff:ff:ff:ff 4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0 valid_lft forever preferred_lft forever 5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 link/ether 52:54:00:cd:39:ae brd ff:ff:ff:ff:ff:ff 9: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 3 link/ppp inet 10.151.180.96 peer 10.0.0.1/32 scope global ppp0 valid_lft forever preferred_lft forever kerasen@kerasen-R509:~$ ping -c2 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=55 time=53.3 ms 64 bytes from 8.8.8.8: icmp_seq=2 ttl=55 time=45.8 ms --- 8.8.8.8 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 45.804/49.572/53.341/3.775 ms kerasen@kerasen-R509:~$ dig google.com ; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 42082 ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;google.com. IN A ;; Query time: 0 msec ;; SERVER: 127.0.1.1#53(127.0.1.1) ;; WHEN: Sat Mar 11 18:07:08 SAST 2017 ;; MSG SIZE rcvd: 28 kerasen@kerasen-R509:~$ tracepath 8.8.8.8 1?: [LOCALHOST] pmtu 1500 1: no reply 2: 41.48.22.42 1538.526ms 2: 41.48.22.42 563.197ms 4: 10.228.233.193 75.090ms asymm 3 5: 41.48.16.1 69.529ms asymm 4 6: 41.48.0.2 168.761ms asymm 5 7: 41.48.1.1 67.811ms asymm 6 8: 41.48.253.1 131.016ms asymm 6 9: 41.48.253.37 151.156ms asymm 7 10: no reply 11: no reply 12: no reply 13: no reply 14: no reply 15: no reply 16: no reply 17: no reply 18: no reply 19: no reply 20: no reply 21: no reply 22: no reply 23: no reply 24: no reply 25: no reply 26: no reply 27: no reply 28: no reply 29: no reply 30: no reply Too many hops: pmtu 1500 Resume: pmtu 1500 kerasen@kerasen-R509:~$ >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>