VirtualBox

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Ticket Resolution Summary Owner Reporter
#16923 duplicate host only networking (hostonlyif) broken LennyHers
Description

We have just upgrade all our VM hosts to 5.1.24r117012 which obviously broke the whole vm networking across 300 VMs (hostonlyifs). It is not possible to ping the hostonly interface from the guest and the host system shows that all packets to the interface are being dropped.

$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.2 LTS Release: 16.04 Codename: xenial

$ uname -a Linux mars 4.4.0-83-generic #106-Ubuntu SMP Mon Jun 26 17:54:43 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

$ vboxmanage --version 5.1.24r117012

VBoxManage hostonlyif create VBoxManage hostonlyif ipconfig vboxnet0 --ip 192.168.56.1 VBoxManage dhcpserver add --ifname vboxnet0 --ip 192.168.56.10 --netmask 255.255.255.0 --lowerip 192.168.56.200 --upperip VBoxManage dhcpserver modify --ifname vboxnet0 --enable

$ sudo ifconfig vboxnet0 vboxnet0 Link encap:Ethernet HWaddr 0a:00:27:00:00:00

inet addr:192.168.56.1 Bcast:0.0.0.0 Mask:255.255.255.0 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:403 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

Note: Please consider the "dropped" count. All packets are being dropped.

#840 invalid host only connection. afasias
Description

VMware offers a connection type called "host-only". This creates one network interface on each OS (one for the Host and one for the Guest) that you can assign with an IP and let the two operating systems see each other through this connection. Is it possible to do currently in VirtualBox? Should we expect that feature in one of the next versions of VirtualBox? That would be so great because someone could access services running in host from guest, and vice versa.

#2391 fixed host networking unreliable Michal Suchanek
Description

The host networking often breaks.

Usually the machine would boot and not get any ip address (pausing during the boot process) but restarting network later brings the network up.

In some cases the network just works or it does not work at all. I tried looking with tcpdump, and while the virtual machine tried to obtain the IP address I saw packets coming from the DHCP server. Also the DHCP server logs show the machine asking for address and the server sending offers. The virtual machine never sees the offers, though.

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