Ip-pool is for source nat so we don't allow/expect new packet hitting ip-pool ip as destination. ... Race condition in ip_route_input_slow. Ask Question Asked 6 years, 2 months ago. I will be honest, I didn't do a deep study on your traces. The u/aramnova community on Reddit. This makes the whole routing code very buggy. Network Engineering Stack Exchange is a question and answer site for network engineers.

msg="iprope_in_check() check failed on policy 0, drop When you see iprope_in_check for pass through traffic that means there is an ip-pool created for destination address.

... /* Try to bind route to arp only if it is output route or unicast forwarding path. Troubleshooting Tip : debug flow messages "iprope_in_check() check failed, drop" - "Denied by forward policy check" - "reverse path check fail, drop" Last Modified Date: 01-04-2017 Document ID: FD40050 All Bootlin training courses. id=13 trace_id=1 func=fw_forward_handler line=650 msg="Allowed by Policy-14: SNAT" For more information on debuging the packet flow, see How to debug the packet flow. When FortiOS is in Transparent mode, the unit acts like a bridge sending all incoming traffic out on the other interfaces. %ASA-1-106021: Deny protocol reverse path check from source_address to dest_address on interface interface_name. %ASA-1-106101: Number of cached deny-flows for ACL log has reached limit (number). id=20085 trace_id=210 func=resolve_ip_tuple_fast line=2727 msg="Find an existing session, id-00000e90, reply direction" Apply destination NAT to inverse source NAT action: r11187 r11366 1 Index: linux- : 2 ===== 3 This makes the routes inserted by dn_route_output_slow() not able to be freed as the refcnt is not released. * Vladimir V. Ivanov : IP rule info (flowid) is really useful. Sign up to join this community. Stuck at home? when you " .. repair InternetA again." Check our new online training!

Reddit gives you the best of the internet in one place. id=13 trace_id=286 func=ip_route_input_slow line=1279 msg="reverse path check fail, drop" Sounds like the fortigate is doing spoof detection. It only takes a minute to sign up.

DISCONNECT internetB and check if ping resumes. and ping keeps failing. In dn_dst_gc(), dnrt_drop() is called to release rt which could potentially cause the dst->__refcnt to be dropped to -1. The Fortigate will drop packets in case of RPF check failure (see related article at the end of this page Details about RPF (Reverse Path Forwarding), also called Anti Spoofing, on FortiOS) To verify the routing table, use the CLI command "get router info routing-table all" as per the example below :

Turn it off to see if it clears the problem. Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Home ; Questions ; Tags ; Users ; Unanswered ; Fortigate reverse path check fail.

We have a Fortigate 60C fireall, connected to 3 networks: Internet to WAN1, assigned through DHCP by the ISP; Internal office network to the primary internal interface: * Tobias Ringstrom : Uninitialized res.type in ip_route_output_slow. How to check the bridging information in Transparent mode.

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