“Poland has officially requested German approval to deliver Mig-29 to Ukraine. Permit is required as fighter jets are ex Luftwaffe (and before that East German Air Force)“
https://twitter.com/AlexLuck9/status/1646470279110205441
“Süddeutsche Zeitung writes that Germany will already today allow Poland to transfer the former GDR Mig-29’s to Ukraine. The sales contracts for armaments from Germany generally stipulate that the federal government must agree to a possible later transfer.”
https://twitter.com/NOELreports/status/1646502792838914050