tree be7f79d4b2e607cb58a42b834f06c6730ca017e3
parent 39c9281ba1752e3fcb4c6e8b5908f660b78c7c56
author Arthur Sfez <asfez@google.com> 1611360405 -0800
committer gVisor bot <gvisor-bot@google.com> 1611360732 -0800

Refactor GetMainNICAddress

It previously returned an error but it could only be UnknownNICID. It now
returns a boolean to indicate whether the nic exists or not.

PiperOrigin-RevId: 353337489