Best practice for error handling

[cha-king]

Heyo! I'm wondering what's recommended for error handling with this package. For instance, I've received a network is unreachable error that I'd like to handle, however, it doesn't seem as though this is defined as a variable in the package. I imagine this is coming directly from netlink, but I was just wondering if there are any best practices around handling specific error messages beyond resorting to string comparison.

Thanks!