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From "Rohit Yadav (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (CLOUDSTACK-8945) rp_filter=1 not set on VPC private gateway initially, but is set after restart of VPC router
Date Tue, 08 Aug 2017 09:54:00 GMT

     [ https://issues.apache.org/jira/browse/CLOUDSTACK-8945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rohit Yadav reassigned CLOUDSTACK-8945:
---------------------------------------

    Assignee: Rohit Yadav

> rp_filter=1 not set on VPC private gateway initially, but is set after restart of VPC
router
> --------------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-8945
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8945
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Virtual Router
>    Affects Versions: 4.4.4
>            Reporter: Anton Opgenoort
>            Assignee: Rohit Yadav
>
> (on ACS4.4.4 with XenServer as hypervisor)
> Steps to reproduce:
> -create VPC router
> -Create private gateway on VPC router
> -now log on to the rVM via the hypervisor's link-local address
> root@r-46771-VM:~# sysctl net.ipv4.conf.eth2.rp_filter
> net.ipv4.conf.eth2.rp_filter = 0
> Restart the rVM via CloudStack (NOT restart VPC but restart the underlying router via
CloudStack)
> -log on again:
> root@r-46771-VM:~# sysctl net.ipv4.conf.eth2.rp_filter
> net.ipv4.conf.eth2.rp_filter = 1
> The issue thus is that on initial creation it is not set, where it should be set immediately

> Note: when adding a regular network tier to the VPC config, that new interface IS configured
with rp_filter=1. So it is limited to the private gateway NIC. 



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