use and require load the module. Once the module is loaded, it's available to everyone. There's no propogation, since it's a global effect. Being a global effect, you can't make the module unavailable to main.

You could break IO::Socket::INET for everyone, though.

package MyModule;
use IO::Socket::INET ();
undef \&IO::Socket::INET::configure;
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Update: s/new/configure/ in code block to prevent IO::Socket->new(Domain => AF_INET, ...).