export interface DnsPropagationResult {
    ok: boolean;
    attempts: number;
}
/**
 * Polls public DNS until an A record exists for the funnel hostname or the
 * deadline passes. Each round queries every DoH resolver in parallel plus the
 * system resolver, so a stale negative cache on a single resolver (e.g. a
 * cached NXDOMAIN on dns.google while cloudflare already serves the record)
 * never produces a false failure.
 */
export declare function funnelPublicDnsPropagated(hostname: string, timeoutSeconds: number): Promise<DnsPropagationResult>;
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