Very slow network to Ubuntu server VM

[mjremijan]

Hi there. I am running Windows 11 host, VirtualBox 7.2.6, and Ubuntu server 24.04.4.

I have the Ubuntu VM configured with a Bridged network adapter because I have multiple VM's on my network and I need them to get assigned their own IPs so I can access them from other machines on the network.

Lately I've noticed the network traffic to the VMs is incredibly slow. When I run apt to do updates, the downloads can take more than an hour or more. It didn't used to be like this, so something has changed but I don't know what. I've kept my VM configurations the same. I update VirtualBox monthly to get the latest version and Windows installs its own updates.

Any thoughts on this? Any way I can get the network speed back to the VM?

[Xriuk]

Not sure if it's your case, apparently if you are on Wi-Fi Windows hadles packets differently and a bridged adapter becomes very slow, so you have to use NAT (with port forwarding if needed).

[klaus]

Previous reply isn't something the devs can confirm - bridged to wifi works well, as long as the wifi router implements the protocols according to the specifications... if there are performance issues it needs a proper investigation, including packet traces. To figure out what's going wrong.