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How to clear a flow on Cisco ASA?

jilse-iph
Level 1
Level 1

I have an interface with an access-list bound to that interface as "in" ACL with the following line as first line of the ACL:

access-list from-mpls line 1 extended deny udp host 10.255.9.2 eq syslog host 10.255.7.254 eq syslog

But with packet-tracer, i see the following:

packet-tracer input versatel-mpls udp 10.255.9.2 514 10.255.7.2 514 detailed


Phase: 1
Type: FLOW-LOOKUP
Subtype:
Result: ALLOW
Config:
Additional Information:
Found flow with id 2606510442, using existing flow
Module information for forward flow ...
snp_fp_inspect_ip_options
snp_fp_translate
snp_fp_adjacency
snp_fp_encrypt
snp_fp_fragment
snp_ifc_stat

Module information for reverse flow ...
snp_fp_inspect_ip_options
snp_fp_ipsec_tunnel_flow
snp_fp_translate
snp_fp_adjacency
snp_fp_fragment
snp_ifc_stat

Result:
input-interface: versatel-mpls
input-status: up
input-line-status: up
Action: allow

How can i get rid of that existing flow, that leads here to allowing the packet even if the access-list denies it? The firmware of the ASA is 9.2.4(10).

I know, i can get rid of that flow with rebooting the asa, but isn't there another possibility (the ASA is in production, so i can't just reboot at any time)?

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