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IPSec VPN troubleshooting

What's the cause of below logs on CISCO 2801-12.4(22)T,

Jul  2 07:15:04.030 AST: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 192.168.11.1 (Tunnel11) is down: peer restarted
Jul  2 07:15:04.034 AST: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 192.168.10.1 (Tunnel10) is down: peer restarted
Jul  2 07:15:04.102 AST: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 192.168.11.1 (Tunnel11) is up: new adjacency
Jul  2 07:15:04.106 AST: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 192.168.10.1 (Tunnel10) is up: new adjacency
Jul  2 07:16:01.749 AST: %CRYPTO-4-PKT_REPLAY_ERR: decrypt: replay check failed
        connection id=2073, sequence number=379

Jul  2 08:57:12.334 AST: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 192.168.10.1 (Tunnel10) is down: holding time expired
Jul  2 08:57:15.450 AST: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 192.168.11.1 (Tunnel11) is down: holding time expired
Jul  2 08:57:16.518 AST: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 192.168.10.1 (Tunnel10) is up: new adjacency

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