I was making some changes in routers and after I rolled back configuration a gre tunnel won't work. It's GRE Tunnel between a Cisco 7600 and Cisco 2851.
It seems like 7600 sent packets unencrypted.
On C2851 is received this message:
%CRYPTO-4-RECVD_PKT_NOT_IPSEC: Rec'd packet not an IPSEC packet.
(ip) vrf/dest_addr= /10.0.0.10, src_addr= 10.0.0.18, prot= 47
Could you check configuration attached and give any advise.