topic Re: Ping with (DUP!) results in Firewall and Security Management https://community.checkpoint.com/t5/Firewall-and-Security-Management/Ping-with-DUP-results/m-p/135316#M20378 <P>error screenshot attached.&nbsp;</P><P>&nbsp;</P> Wed, 01 Dec 2021 08:56:08 GMT Rahul_Borah 2021-12-01T08:56:08Z Ping with (DUP!) results https://community.checkpoint.com/t5/Firewall-and-Security-Management/Ping-with-DUP-results/m-p/135280#M20369 <P>&nbsp;</P><P>Hi all,</P><P>I receive replies with (DUP!) errors, ping from CP gateway to server. Kindly let me know what is the possible cause and how to resolve this issue.</P><P>CP version: R80.40, A/P cluster</P><P>Thanks &amp; Regards</P><P>RB</P><P>&nbsp;</P><P>&nbsp;</P> Tue, 30 Nov 2021 16:52:27 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/Ping-with-DUP-results/m-p/135280#M20369 Rahul_Borah 2021-11-30T16:52:27Z Re: Ping with (DUP!) results https://community.checkpoint.com/t5/Firewall-and-Security-Management/Ping-with-DUP-results/m-p/135281#M20370 <P>No idea what that even means :-). Had to google it and found below link...learned something new today. Can you send a screenshot?</P> <P><A href="https://unix.stackexchange.com/questions/13254/what-could-dup-mean-when-using-ping" target="_blank">https://unix.stackexchange.com/questions/13254/what-could-dup-mean-when-using-ping</A></P> Tue, 30 Nov 2021 17:19:43 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/Ping-with-DUP-results/m-p/135281#M20370 the_rock 2021-11-30T17:19:43Z Re: Ping with (DUP!) results https://community.checkpoint.com/t5/Firewall-and-Security-Management/Ping-with-DUP-results/m-p/135316#M20378 <P>error screenshot attached.&nbsp;</P><P>&nbsp;</P> Wed, 01 Dec 2021 08:56:08 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/Ping-with-DUP-results/m-p/135316#M20378 Rahul_Borah 2021-12-01T08:56:08Z Re: Ping with (DUP!) results https://community.checkpoint.com/t5/Firewall-and-Security-Management/Ping-with-DUP-results/m-p/135318#M20379 <P>This is not specific to the Checkpoint issue, rather general network issue. You may look any Networkin/Linux questions/forums on this and will get valid possibilities, such as:</P><UL><LI>Loop in the network</LI><LI>Duplicate IP addresses on the same network</LI><LI>Botched load balancing in the network</LI><LI>Faulty host/NIC driver on the host being ping-ed</LI><LI>Incorrect cluster state/brain split issue</LI></UL> Wed, 01 Dec 2021 09:11:48 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/Ping-with-DUP-results/m-p/135318#M20379 Yuri_Slobodyany 2021-12-01T09:11:48Z