Fw: [Bug 9493] New: routing table bug or feature adding/replacing/deleting routes

Fw: [Bug 9493] New: routing table bug or feature adding/replacing/deleting routes

[Stephen Hemminger]

Begin forwarded message:

Date: Mon,  3 Dec 2007 11:23:27 -0800 (PST)
From: bugme-daemon@bugzilla.kernel.org
To: shemminger@linux-foundation.org
Subject: [Bug 9493] New: routing table bug or feature adding/replacing/deleting routes


http://bugzilla.kernel.org/show_bug.cgi?id=9493

           Summary: routing table bug or feature adding/replacing/deleting
                    routes
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.23
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: IPV4
        AssignedTo: shemminger@linux-foundation.org
        ReportedBy: green@msu.ru


Most recent kernel where this bug did not occur: unknown
Distribution: Ubuntu (kernel 2.6.22-14), Gentoo (kernel 2.6.23-gentoo-r3)
Hardware Environment: x86
Software Environment:
Steps to reproduce:
(eth0 is 172.16.32.0/22):
$ ip route add 172.17.0.1 via 172.16.32.1
$ ip route append 172.17.0.1 via 172.16.35.1
$ ip ro
...
172.17.0.1 via 172.16.32.1 dev eth0
172.17.0.1 via 172.16.35.1 dev eth0
...
$ ip ro replace 172.17.0.1 via 172.16.35.1
$ ip ro
...
172.17.0.1 via 172.16.35.1 dev eth0
172.17.0.1 via 172.16.35.1 dev eth0
...
$ ip ro del 172.17.0.1
$ ip ro
...
172.17.0.1 via 172.16.35.1 dev eth0
...

Problem Description:
Is it OK:
- only 1 route is deleted?
- only 1 route is replaced?
- replacing route results in dublicate routing table entry?
Is this a bug or feature?


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-- 
Stephen Hemminger <shemminger@linux-foundation.org>