I'm connecting to a corporate internet for the first time using an Ethernet cable. The connection works for everyone else, but not my Ubuntu 19.1 laptop.
After troubleshooting, there doesn't seem to be any issue with DNS since my laptop resolves the domains and I can access these IP addresses on my phone. I can't ping any website with either the IP address or domain name from my laptop. I am able to ping the default route.
$ host google.com
google.com has address 64.233.185.102
google.com has address 64.233.185.138
google.com has address 64.233.185.113
google.com has address 64.233.185.139
google.com has address 64.233.185.100
google.com has address 64.233.185.101
google.com has IPv6 address 2607:f8b0:4002:c09::64
google.com mail is handled by 40 alt3.aspmx.l.google.com.
google.com mail is handled by 30 alt2.aspmx.l.google.com.
google.com mail is handled by 50 alt4.aspmx.l.google.com.
google.com mail is handled by 20 alt1.aspmx.l.google.com.
google.com mail is handled by 10 aspmx.l.google.com.
$ ping 72.30.35.10
PING 72.30.35.10 (72.30.35.10) 56(84) bytes of data.
--- 72.30.35.10 ping statistics ---
164 packets transmitted, 0 received, 100% packet loss, time 166900ms
$ network-test
INFO: This system has exactly one default route
INFO: Host localhost answers to ICMP pings
INFO: Loopback interface is working properly
INFO: The enp0s31f6 interface is up
INFO: The enp0s31f6 interface has IP address 10.248.19.128 assigned
INFO: The enp0s31f6 interface has tx and rx packets.
WARN: The wlp4s0 interface is down
INFO: The router 10.248.19.11 is reachable
INFO: This system is configured to use nameserver 127.0.0.53
INFO: Host 127.0.0.53 answers to ICMP pings
INFO: Dns server 127.0.0.53 resolved correctly www.debian.org
INFO: The nameserver configured for this system works properly
WARN: System does not seem to reach Internet host www.debian.org through ICMP
ERR: Cannot access web server at Internet host www.debian.org (port 80)
$ ping 10.248.19.11
PING 10.248.19.11 (10.248.19.11) 56(84) bytes of data.
64 bytes from 10.248.19.11: icmp_seq=1 ttl=255 time=1.09 ms
64 bytes from 10.248.19.11: icmp_seq=2 ttl=255 time=1.28 ms
64 bytes from 10.248.19.11: icmp_seq=3 ttl=255 time=1.61 ms
64 bytes from 10.248.19.11: icmp_seq=4 ttl=255 time=0.918 ms
> 2: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> fq_codel state UP group default qlen 1000
> link/ether 12:0a:57:4c:e7:13 brd ff:ff:ff:ff:ff:ff
> inet 10.248.19.128/24 brd 10.248.19.255 scope global dynamic noprefixroute enp0s31f6
> valid_lft 86104sec preferred_lft 86104sec
> inet6 fe80::9f93:f86b:b5c4:b9b5/64 scope link noprefixroute
> valid_lft forever preferred_lft forever
What additional troubleshooting steps can I perform to identify why I can't ping websites?
$sudo lshw -C network
*-network DISABLED
description: Wireless interface
product: Wireless 8260
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlp4s0
version: 3a
serial: a4:34:d9:bc:64:de
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=5.3.0-40-generic firmware=36.77d01142.0 latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:128 memory:f1000000-f1001fff
*-network
description: Ethernet interface
product: Ethernet Connection I219-LM
vendor: Intel Corporation
physical id: 1f.6
bus info: pci@0000:00:1f.6
logical name: enp0s31f6
version: 21
serial: 12:0a:57:4c:e7:13
size: 100Mbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k duplex=full firmware=0.13-3 ip=10.248.3.104 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:124 memory:f1200000-f121ffff
$ host www.ebay.com
www.ebay.com is an alias for slot9428.ebay.com.edgekey.net.
slot9428.ebay.com.edgekey.net is an alias for e9428.b.akamaiedge.net.
e9428.b.akamaiedge.net has address 72.246.253.92
$ ping -c 5 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
--- 8.8.8.8 ping statistics --- 5 packets transmitted, 0 received, 100% packet loss, time 4104ms
I never had issues with wireless. Connected to my phones internet now.
0 Answers