GitHub user tatay188 edited a comment on the discussion: Network Usage & Routed 
Mode VR's

Something interesting happened, I use the command:
!
 **nft list ruleset | more** 
 !
and the VR went down. 
It restarted byitself; however BGP did not come up and the BGP daemon 
dissapeared, no vtysh, took me an hour to solve the issue - have to change to 
the default ACL allow, then reset the VPC, Network and finally the Admin have 
to stop and start the  Vrouter In that order, restarting the Vrouter alone by 
the admin did not work, any other combination did not work either.

Once backup I put back the Custom ACL, using the same Cisco logic.
Blocking Ingres to those IP addresses trying to attack our systems:
1 deny ingress Specific1 P/mask
2 deny ingress Specific2 range of IPs/mask
3.
20. ingress allow all
21  egress allow all

However before it went down i was able to see The ETH2 has all ingress list, 
not in the right order as I have it in the UI. 
I am afraid to touch anything else as this a production VPC, and I did not 
expect the "nft list ruleset | more" was going to be this dangerous. It's a big 
vrouter, then memory cpu and traffic should not be a problem.
I am building another test routed-VPC to run some additional tests.





GitHub link: 
https://github.com/apache/cloudstack/discussions/11299#discussioncomment-16854220

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