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The measurements of the Doppler shifts of the Fraunhofer lines, scattered bythe dust grains in the solar F-corona, provides the insight on the velocityfield of the dust and hence on its origin. We report on such measurementsobtained during the total eclipse of March 29, 2006. We used a Fabry-P\'erotinterferometer with the FOV of 5.9 degrees and the spectral resolution of about5000 to record Fraunhofer spectral lines scattered by the dust of the F-Corona.The spectral region was centered on the MgI 5172.69 A line. The measuredline-on-sight velocities with the amplitude in the range from -10 to 10 km/sshow that during our observations the dust grains were on the orbit with aretrograde motion in a plane nearly perpendicular to the ecliptics. Thisindicates their cometary origin. Indeed, at the end of March, 2006, SOHOrecorded several sungrazing comets with the orbital elements close to what wasdeduced from our measurements. We conclude that the contribution of comets tothe dust content in the region close to the Sun can be more important albeitvariable in time. We also deduce that the size of the most of the dust grainsduring our observations was less than 0.1 microns.

The velocity of the dust near the Sun during the Solar Eclipse of March 29, 2006 and sungrazing comets