[ModEdit: Split from viewtopic.php?f=3&t=87820]
The same problem with Ubuntu Desktop 18.04. Ubuntu Desktop/Server 16.04/17.10 works fine.
Ubuntu 18.04 internet issue
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Re: Ubuntu Server 18.04 DHCP issue
I have Ubuntu 18.04. I installed 18.04. There is no problem with 18.04.xMARVELx wrote:The same problem with Ubuntu Desktop 18.04.
If you have Bridged-over-WiFi, that may be another problem altogether. Could you please clarify your setup @"xMARVELx"?
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Re: Ubuntu Server 18.04 DHCP issue
host: Windows 10 1803 (17134.1)
host network: via ethernet
guest: Ubuntu Desktop 18.04
guest network: NAT or Bridge adapter
VirtualBox 5.2.10 (r122406)
logs and screenshots:
host network: via ethernet
guest: Ubuntu Desktop 18.04
guest network: NAT or Bridge adapter
VirtualBox 5.2.10 (r122406)
logs and screenshots:
- Attachments
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- ubuntu-18.04-log-after-install.zip
- After install: logs for NAT and Bridge, screenshots
- (232.5 KiB) Downloaded 122 times
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- ubuntu-18.04-log-before-install.zip
- Before install: logs for NAT and Bridge, screenshots
- (237.63 KiB) Downloaded 93 times
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Re: Ubuntu Server 18.04 DHCP issue
First of all, if you can avoid it, do not include screenshots when you can simply include the text. It's smaller, you can copy/paste it, and it's searchable. Always prefer that, it saves a (virtual) tree or two...
Second, I'm not sure I follow. What's the problem? I see that you successfully got an IP address in all cases.
And what's the "before install"/"after install". Install of what? Before/after what?
Second, I'm not sure I follow. What's the problem? I see that you successfully got an IP address in all cases.
And what's the "before install"/"after install". Install of what? Before/after what?
Do NOT send me Personal Messages (PMs) for troubleshooting, they are simply deleted.
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Re: Ubuntu Server 18.04 DHCP issue
1. Logs preferred!
2. That's it! Got an IP, DNS but no internet access at all.
3. My bad. Here I had to explain.
Before install: created new vm setup, inserted ISO image and passed to "Try Ubuntu" with NAT / Bridge network
After install: installed Ubuntu with Guest Additions, start OS with NAT / Bridge network
2. That's it! Got an IP, DNS but no internet access at all.
3. My bad. Here I had to explain.
Before install: created new vm setup, inserted ISO image and passed to "Try Ubuntu" with NAT / Bridge network
After install: installed Ubuntu with Guest Additions, start OS with NAT / Bridge network
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Re: Ubuntu Server 18.04 DHCP issue
Not always. I can not see the "transactions"/"discussion" between the guest and the DHCP server if you are in Bridged mode.xMARVELx wrote:1. Logs preferred!
Then you do NOT have the same issue. I'm splitting your post. Read the thread the I split you from. There was a DHCP problem. It was even in the title!!! That's why it's a bad idea to post a "me too", when you haven't actually read the thread carefully...xMARVELx wrote:2. That's it! Got an IP, DNS but no internet access at all.
Ah, OK, you talk about the LiveDVD, versus the actually installed in the VM, OK, got it...xMARVELx wrote:Before install ... After install
Try the following commands from a Terminal on your guest. I've included sample output that you should be focusing on:
Report any misconfiguration, or any errors from the "ping" commands.$ ifconfig enp0s3 Link encap:Ethernet HWaddr 08:00:27:40:51:1a inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0 $ route -n Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 10.0.2.2 0.0.0.0 UG 100 0 0 enp0s3 $ ping <DefaultGateway> <-- tests your connectivity $ ping 8.8.8.8 <-- tests outgoing connectivity $ ping google.com <-- tests name resolution
Do NOT send me Personal Messages (PMs) for troubleshooting, they are simply deleted.
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Re: Ubuntu 18.04 internet issue
I did everything you asked for.
And this is what I noticed:
And this is what I noticed:
- Ping by domain name failed. Then I decided to check the local DNS server with nslookup. The result was positive. After that all the other sites started to ping - internet is appears.
- Also if I manually set the DNS server in the connection - internet is appears.
Code: Select all
$ ifconfig
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.2.15 netmask 255.255.255.0 broadcast 10.0.2.255
inet6 fe80::214b:1391:7cf:d51a prefixlen 64 scopeid 0x20<link>
ether 08:00:27:4f:3a:33 txqueuelen 1000 (Ethernet)
RX packets 261 bytes 187717 (187.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 253 bytes 31634 (31.6 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 100 bytes 7788 (7.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 100 bytes 7788 (7.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.2.2 0.0.0.0 UG 100 0 0 enp0s3
10.0.2.0 0.0.0.0 255.255.255.0 U 100 0 0 enp0s3
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 enp0s3
$ ping -c 4 10.0.2.2
PING 10.0.2.2 (10.0.2.2) 56(84) bytes of data.
64 bytes from 10.0.2.2: icmp_seq=1 ttl=64 time=0.193 ms
64 bytes from 10.0.2.2: icmp_seq=2 ttl=64 time=0.408 ms
64 bytes from 10.0.2.2: icmp_seq=3 ttl=64 time=0.294 ms
64 bytes from 10.0.2.2: icmp_seq=4 ttl=64 time=0.298 ms
--- 10.0.2.2 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3074ms
rtt min/avg/max/mdev = 0.193/0.298/0.408/0.077 ms
$ ping -c 4 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=54 time=20.4 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=54 time=19.6 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=54 time=21.9 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=54 time=20.2 ms
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3169ms
rtt min/avg/max/mdev = 19.653/20.557/21.960/0.855 ms
$ ping -c 4 google.com
ping: google.com: Name or service not known
$ nslookup -q=A google.com
Server: 127.0.0.53
Address: 127.0.0.53#53
Non-authoritative answer:
Name: google.com
Address: 108.177.14.102
Name: google.com
Address: 108.177.14.101
Name: google.com
Address: 108.177.14.100
Name: google.com
Address: 108.177.14.139
Name: google.com
Address: 108.177.14.138
Name: google.com
Address: 108.177.14.113
$ nslookup -q=A google.com 192.168.1.1
Server: 192.168.1.1
Address: 192.168.1.1#53
Non-authoritative answer:
Name: google.com
Address: 108.177.14.102
Name: google.com
Address: 108.177.14.113
Name: google.com
Address: 108.177.14.138
Name: google.com
Address: 108.177.14.139
Name: google.com
Address: 108.177.14.100
Name: google.com
Address: 108.177.14.101
$ ping google.com
PING google.com (108.177.14.102) 56(84) bytes of data.
64 bytes from lt-in-f102.1e100.net (108.177.14.102): icmp_seq=1 ttl=46 time=36.8 ms
64 bytes from lt-in-f102.1e100.net (108.177.14.102): icmp_seq=2 ttl=46 time=34.4 ms
64 bytes from lt-in-f102.1e100.net (108.177.14.102): icmp_seq=3 ttl=46 time=36.8 ms
64 bytes from lt-in-f102.1e100.net (108.177.14.102): icmp_seq=4 ttl=46 time=36.8 ms
--- google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3055ms
rtt min/avg/max/mdev = 34.488/36.262/36.899/1.024 ms
Last edited by socratis on 6. May 2018, 20:41, edited 2 times in total.
Reason: Replaced attachment with actual text.
Reason: Replaced attachment with actual text.
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Re: Ubuntu 18.04 internet issue
I replaced your attachment with the actual text, it was much easier and the text wasn't that huge. Thank you for the commands/replies!
The problem I see is in your DNS. In that case, read ch. 9.11.6 Using the host’s resolver as a DNS proxy in NAT mode, and issue the command:
And "<VM name>" is ... your VM name. In the last log that you attached that was "ubuntu-18.04-clean".
The problem I see is in your DNS. In that case, read ch. 9.11.6 Using the host’s resolver as a DNS proxy in NAT mode, and issue the command:
VBoxManage modifyvm "<VM name>" --natdnshostresolver1 on
And "<VM name>" is ... your VM name. In the last log that you attached that was "ubuntu-18.04-clean".
Do NOT send me Personal Messages (PMs) for troubleshooting, they are simply deleted.
Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.
If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.
Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.
If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.