Air carrier Captain reported GPS jamming while close to Israeli border. The Captain suggests that this not be a maintenance write-up because it is such a common occurrence on this route.

Narrative

This report is specifically relating to our Dubai flights over flying Israeli airspace. The cautions in the warner about having the seatbelt sign on; and all passengers seated and cockpit door closed; need to be re-emphasized in a pilot bulletin related to the flights to and from Dubai and any others that transit Israeli airspace.Also; as a maintenance issue; the Israelis jam GPS signals as part of their Iron Dome defense system and aircraft under airspace will lose GPS reception. The aircraft will make an automated maintenance right up regarding the loss of GPS.Again; another pilot bulletin should be issued encouraging pilots to make an info only write-up stating that the aircraft was in Israeli air space; and that the onboard systems were working fine.Attached are pictures of my write up doing so and saving ZZZ Maintenance a two hour check that they are performing on other flights transiting Israeli airspace when Operations and Maintenance are unaware that the signals were jammed from the ground; and that it was not an aircraft defect.