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On Linux, verify that the kernel entropy pool is capable of providing strong random data before allowing WPA/WPA2 connection to be established. If 20 bytes of data cannot be read from /dev/random, force first two 4-way handshakes to fail while collecting entropy into the internal pool in hostapd. After that, give up on /dev/random and allow the AP to function based on the combination of /dev/urandom and whatever data has been collected into the internal entropy pool.