SYNCOOKIE_SECRET_SIZE
arc4rand(secbits, SYNCOOKIE_SECRET_SIZE, 0);
arc4rand(V_tcp_syncache.secret.key[0], SYNCOOKIE_SECRET_SIZE, 0);
arc4rand(V_tcp_syncache.secret.key[1], SYNCOOKIE_SECRET_SIZE, 0);
uint8_t key[2][SYNCOOKIE_SECRET_SIZE];