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IPSec VPN packets are dropped when compression is enabled-When you configure the ip-comp enable command under the group-policy, then large packets that are eligible for compression are silently dropped by the security appliance. VPN compression is only useful for very slow Internet connections, so we suggest that you disable compression (ip-comp disable). Alternatively, you can upgrade to interim build 8.0(4.16) or later. (CSCsu26649)