netdev - Re: ip route get oddly fails for ipv6

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Date:   Thu, 23 Feb 2017 16:46:36 +0200
From:   Leon Goldberg <lgoldber@...hat.com>
To:     netdev@...r.kernel.org
Cc:     Edward Haas <ehaas@...hat.com>, Dan Kenigsberg <danken@...hat.com>
Subject: Re: ip route get oddly fails for ipv6

Forgot to mention:

[root@...alhost tests]# uname -r
3.10.0-514.2.2.el7.x86_64
[root@...alhost tests]# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)


On Thu, Feb 23, 2017 at 4:43 PM, Leon Goldberg <lgoldber@...hat.com> wrote:
> Hey,
>
> For some reason ip route get fails to retrieve ipv6 routes, although
> the subject destination is indeed reachable:
>
> [root@...alhost tests]# ip -6 route
> 2001:1::/64 dev eth1  proto kernel  metric 256
> fe80::/64 dev eth0  proto kernel  metric 256
> fe80::/64 dev eth1  proto kernel  metric 256
>
> [root@...alhost tests]# ping6 2001:1::1
> PING 2001:1::1(2001:1::1) 56 data bytes
> 64 bytes from 2001:1::1: icmp_seq=1 ttl=64 time=0.035 ms
> 64 bytes from 2001:1::1: icmp_seq=2 ttl=64 time=0.055 ms
> 64 bytes from 2001:1::1: icmp_seq=3 ttl=64 time=0.055 ms
> ^C
> --- 2001:1::1 ping statistics ---
> 3 packets transmitted, 3 received, 0% packet loss, time 2000ms
> rtt min/avg/max/mdev = 0.035/0.048/0.055/0.011 ms
>
> [root@...alhost tests]# ip route get 2001:1::1
> [root@...alhost tests]#
> [root@...alhost tests]# ip -6 route get 2001:1::1
> [root@...alhost tests]#
>
> ipv4 ip route get works fine. Any hints?
>
> Thanks,
> Leon