![]() So, now after laying out everything as clearly as possible, Machine 2 can ping Machine 1 and Machine 3 Machine 1 and Machine 3 can ping Machine 2 The following using IPv4 and testing IP addresses only: Wireless and a Wired connection to Machine 3 ![]() From your description, your Guest is a physical adapter on Machine 3. There is a lot of missing and confused information here.Īnd, contrary to your initial post your openSUSE Guest on machine does not have “exclusive use of its host’s built-in ethernet adapter” unless you did something unusual like doing a hardware pass-through of the ethernet adapter. I intend to make #3 a Samba server, so it is important to me that I get this working. Why can’t machines 1 and 3 see each other? Neither of them have any other apparent networking issues. I am pinging by numerical addresses to avoid any potential DNS issues, and as all three machines are on the same subnet, I don’t think that the gateway information should even matter. The subnet mask for all three machines is set to 255.255.255.0. The lone DNS server for all three machines is 192.168.1.1 (my router) and the gateway for each machine is also 192.168.1.1. It can ping machine 2 (Debian tablet) which can also ping it. It cannot ping machine 1 which also cannot ping it. It has exclusive use of its host’s built-in ethernet adapter and is cabled to my access point. Machine 3 is an Oracle VirtualBox (version 5.1.10) machine running openSUSE Leap 42.2. It has no firewall and is also wirelessly connected to my access point. It can ping both of the other machines, which can both also ping it. Machine 2 is a tablet running Debian “Stretch” i386. It’s local IP address is 192.168.1.7, and it is wirelessly connected to my only access point (IP address 192.168.1.1). It cannot ping machine 3 (info below) which also cannot ping it. It can ping my Debian machine, which can also ping it. It has a firewall and is my main desktop machine. The other is running Debian “Stretch” i386.
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