} else {
                    entry.address = addr;
                    entry.expiration = expiration;
                }
            }
        }
    }

    static NbtAddress getCachedAddress(final Name hostName) {
        if (CACHE_POLICY == 0) {
            return null;
        }
        synchronized (ADDRESS_CACHE) {
            CacheEntry entry = (CacheEntry) ADDRESS_CACHE.get(hostName);