em1 down in nm, yet it has an IPv6 address

[Ed Greshko]

On 09/11/14 12:25, Dan Irwin wrote:
> Hi all,
>
> [ Reposted from NetworkManager list as it's kinda quiet over there right now ]
>
> Fedora 20 here. nm is 0.9.9.0-41.git20131003. (Old, I know)
>
> Network Manager shows em1 "Wired" as being down. I have em1 configured as down. Yet, I notice the following:
>
> # ip -6 r
> default via fe80::<redacted> dev wlp2s0  proto static  metric 1024
> default via fe80::<redacted> dev em1  proto ra  metric 1024  expires 597sec
>
> # ifconfig em1
> em1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         inet6 fe80::<redacted>  prefixlen 64  scopeid 0x20<link>
>         inet6 2001:<redacted>  prefixlen 64  scopeid 0x0<global>
>         ether <redacted>  txqueuelen 1000  (Ethernet)
>         RX packets 74900  bytes 5929479 (5.6 MiB)
>         RX errors 0  dropped 862  overruns 0  frame 0
>         TX packets 9  bytes 762 (762.0 B)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>         device interrupt 20  memory 0xf7e00000-f7e20000 
>
> Down means down, but only for IPv4.
>
> I have noticed this for several months, and occasionally, it causes a problem with IPv6 connectivity.
>
> Any pointers would be appreciated, before I disable IPv6 completely.
>
>

Well, when I look at the above and see "4163<UP,BROADCAST" I get the feeling that NM isn't really marking the interface down.

If you were to issue "ip link set em1 down" it would truly be down.  But, that doesn't survive a reboot.


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