How to only use target pod network?

Hi, I want to debug the target pod why it can't access some external host.
But when I use kubectl debug with port-forward mode, it can access the external host.
It seemingly access the external host via debug-pod network.

So is there an solution only using target pod network? (for example, logon cluster host and run kubectl debug without port-forward)

No source files or tests are named in the issue. Start by reviewing kubectl-debug's documented debug modes and Kubernetes pod networking behavior; done would require determining whether target-pod-only networking is supported and documenting or implementing a clear solution, while noting that the repository points users to a successor project.

Written by the indexing model from the issue text.