Snaplet person here: Totally. It cannot, and it very likely will never be able to do that. Raw sockets were added, and subsequently removed, from Chromium.
Do you mean, connect from 1 browser tab to another?
Interestingly we can do this, sorta, but in Chrome only. Using arp you can open a network between multiple tabs of the same Chrome instance, putting each browser vm on a different private ip. I only see this useful, though, for testing clustering systems. There won't be any outside internet connectivity in a setup like this though.