Juniper SRX firewall debug: packet dropped: for self but not interested
This is is 90% of the cases caused by the fact that GRE/IPIP or other SRX destined traffic input interface is not assigned to any security zones.
One of the other 10% of the cases is when GRE tunnels with loopback endpoints are configured over IPSEC tunnel. Read more here: SRX GRE with loopback endpoints over Ipsec tunnel does not pass traffic
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