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Bug 1837966

Summary: RFE: Provide config option for route-table for dynamic ipv4 and ipv6
Product: Red Hat Enterprise Linux 8 Reporter: Ales Musil <amusil>
Component: nmstateAssignee: Fernando F. Mancera <ferferna>
Status: CLOSED ERRATA QA Contact: Mingyu Shi <mshi>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 8.1CC: dholler, ferferna, fge, jiji, jishi, network-qe, till
Target Milestone: rcKeywords: FutureFeature, Triaged
Target Release: 8.4Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-05-18 15:16:54 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
verification none

Description Ales Musil 2020-05-20 09:54:59 UTC
Description of problem:

NM provides connection option called ipv4.route-table and ipv6.route-table which decides in which table the route will configured. Provide config option in schema to configure this parameter. 

Something like:

- name: veth1
  type: ethernet
  state: up
  ipv4:
    dhcp: true
    enabled: true
    table-id: 500
  ipv6:
    autoconf: true
    dhcp: true
    enabled: true
    table-id: 500

Comment 2 Gris Ge 2020-05-20 13:34:19 UTC
Hi Ales,

For defining route table in static route, you may use:

```yml
routes:
  config:
  - destination: 198.51.100.0/24
    metric: 150
    next-hop-address: 192.0.2.1
    next-hop-interface: eth1
    table-id: 254
```

The ipv4.route-table and ipv6.route-table is for routes learn from DHCP/Autconf.
Can you give me a use case why storing those dynamic routes in route table matters?

Comment 3 Ales Musil 2020-05-21 10:34:39 UTC
Hi Gris, 

the answer is simple, dynamic source routing. Now we have learn gateway from DHCP/Autoconf response and then configure it to routing table. With this we would require only to set the rules to use this table. As a bonus this approach does not require to check DHCP responses and search for gateways.

Comment 9 Mingyu Shi 2020-10-28 05:45:31 UTC
Created attachment 1724697 [details]
verification

Verified with versions:
NetworkManager-1.28.0-0.1.el8.x86_64
nispor-0.6.1-2.el8.x86_64
nmstate-0.4.1-1.el8.noarch
DISTRO=RHEL-8.4.0-20201026.d.1
Linux hp-dl380pg8-12.rhts.eng.pek2.redhat.com 4.18.0-240.8.el8.x86_64 #1 SMP Sun Oct 25 16:56:23 EDT 2020 x86_64 x86_64 x86_64 GNU/Linux

Comment 11 errata-xmlrpc 2021-05-18 15:16:54 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (nmstate bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:1748