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Ubuntu 16.04 with headless Virtualbox Bridged Network Problem

Posted: 29. Jul 2016, 10:26
by pradl
Following problem:
Currently I am setting up the gateway for the severrack, and I want to virtualize a few services. DNS, DHCP and whatnot.
I created base VM (also Ubuntu Server 16.04). One NIC, a Bridged, connected to my Interface pointing directly outwards.
Firewall on the Host and Guests are also completely turned off for now.
Following problem:

Neither Host nor Guest can talk to each other, and Guest cannot reach the outside network either.

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Name:            DNSServer
Groups:          /
Guest OS:        Other/Unknown
UUID:            9e8eec96-d8fc-4630-b767-66aad93047ee
Config file:     /home/pradl/VirtualBox VMs/DNSServer/DNSServer.vbox
Snapshot folder: /home/pradl/VirtualBox VMs/DNSServer/Snapshots
Log folder:      /home/pradl/VirtualBox VMs/DNSServer/Logs
Hardware UUID:   9e8eec96-d8fc-4630-b767-66aad93047ee
Memory size:     1024MB
Page Fusion:     off
VRAM size:       8MB
CPU exec cap:    100%
HPET:            off
Chipset:         piix3
Firmware:        BIOS
Number of CPUs:  1
PAE:             on
Long Mode:       on
Triple Fault Reset: off
APIC:            on
X2APIC:          off
CPUID Portability Level: 0
CPUID overrides: None
Boot menu mode:  message and menu
Boot Device (1): DVD
Boot Device (2): DVD
Boot Device (3): HardDisk
Boot Device (4): Not Assigned
ACPI:            on
IOAPIC:          off
BIOS APIC mode:  APIC
Time offset:     0ms
RTC:             local time
Hardw. virt.ext: on
Nested Paging:   on
Large Pages:     off
VT-x VPID:       on
VT-x unr. exec.: on
Paravirt. Provider: Default
Effective Paravirt. Provider: None
State:           running (since 2016-07-28T10:26:31.246000000)
Monitor count:   1
3D Acceleration: off
2D Video Acceleration: off
Teleporter Enabled: off
Teleporter Port: 0
Teleporter Address: 
Teleporter Password: 
Tracing Enabled: off
Allow Tracing to Access VM: off
Tracing Configuration: 
Autostart Enabled: off
Autostart Delay: 0
Default Frontend: 
Storage Controller Name (0):            IDE Controller
Storage Controller Type (0):            PIIX4
Storage Controller Instance Number (0): 0
Storage Controller Max Port Count (0):  2
Storage Controller Port Count (0):      2
Storage Controller Bootable (0):        on
IDE Controller (0, 0): /home/pradl/VirtualBox VMs/DNSServer/DNSServer.vdi (UUID: a99deda5-b009-449e-8e3a-9f1dbb21c57f)
IDE Controller (1, 0): Empty
NIC 1:           MAC: 0800273A4809, Attachment: Bridged Interface 'eno1', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: deny, Bandwidth group: none
I cut out the vrde part since that actually works.
Guest has a static IP (192.168.1.11), but cannot reach the gateway at all. Here is the ifconfig for the Host:

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no1      Link encap:Ethernet  HWaddr 00:1e:67:cd:1c:8f  
          inet addr:78.104.88.102  Bcast:78.104.88.127  Mask:255.255.255.192
          inet6 addr: fe80::21e:67ff:fecd:1c8f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:352621 errors:0 dropped:0 overruns:0 frame:0
          TX packets:142474 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:70157801 (70.1 MB)  TX bytes:49697906 (49.6 MB)
          Memory:d0960000-d097ffff 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
I am on this issue for 2 days now and have not really found a solution on the internet either. Any push in the right direction would be appreciated.

Re: Ubuntu 16.04 with headless Virtualbox Bridged Network Problem

Posted: 29. Jul 2016, 10:48
by socratis
pradl wrote:One NIC, a Bridged, connected to my Interface pointing directly outwards.
...
NIC 1:           MAC: 0800273A4809, Attachment: Bridged Interface 'eno1'
...
Guest has a static IP (192.168.1.11)
...
no1      Link encap:Ethernet  HWaddr 00:1e:67:cd:1c:8f
          inet addr:78.104.88.102  Bcast:78.104.88.127  Mask:255.255.255.192
I see a couple of things from the information you provided.
  1. you set a static IP address in the 192.168.x.x range which has no way on this setup to communicate with 78.104.#.#.
  2. the bridged interface is listed as 'eno1' but in the ifconfig it is 'no1'. Was that a bad copy/paste?
  3. Is the bridged adapter a wireless one?
Please read Chapter 6.2 Introduction to networking modes, if you haven't done so already.

Re: Ubuntu 16.04 with headless Virtualbox Bridged Network Problem

Posted: 30. Jul 2016, 17:52
by pradl
1. Oh yes. The basics of networking have escaped me there! How would I set up a route then to let my Guest communicate with my host?
2. Yep, first letter is just missing.
3. Nope it's wired.