Delete deletes the netlink.Link stored in per Connection.Id metadata.

Load returns the netlink.Link stored in per Connection.Id metadata, or nil if no value is present.

LoadAndDelete deletes the netlink.Link stored in per Connection.Id metadata, returning the previous value if any.

LoadOrStore returns the existing netlink.Link stored in per Connection.Id metadata if present.

Store sets the netlink.Link stored in per Connection.Id metadata.