KB81199 - On Juniper SRX devices with GTP-U distribution feature enabled, GTP-U source and destination ports may get swapped and blocked by the security policy. Due to this, all reverse GTP-U packets will be discarded.

⌂ KB81199 On Juniper SRX devices with GTP-U distribution feature enabled, GTP-U source and destination ports may get swapped and blocked by the security policy. Due to this, all reverse GTP-U packets will be discarded. Version 2026-06-19 (paste date) Latest Versions [juniper.net]