Rust embedded and networking

Hi everyone,
Looking to start embedded for a work project (we actually use some micro controllers with c++).
I've see that I have two choice using hosted or bare metal environnement.

Seems for bare metal can only use libcore (no-std) and not libstd.

I will never to send send data via TCP communication and seems that only libstd contains the networking library.

It is possible to do networking event with "bare metal" libcore ?

Thanks a lot