em1 down in nm, yet it has an IPv6 address

[Dan Irwin]

There are other fixes, like disconnecting the gige connection to my laptop
docking station. Or maybe turn wifi off and use only the gige. But If i use
the laptop away from my desk and come back, the problem will bite once more.

Something else i find disconcerting. There must be very few users running
Linux on a laptop, with IPv6, with wifi and gige connections. Maybe they
just get pissed off and go elsewhere when things like google or facebook
fail to load. My biggest problem is maintaining connections to the local
kdc and various internal services which present as dual stack.

I am seriously quite tempted to disable IPv6 on the subnets to which I
connect.


On Thu, Sep 11, 2014 at 3:08 PM, Ed Greshko <ed.greshko at greshko.com> wrote:

> 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.
>
>
> --
> If you can't laugh at yourself, others will gladly oblige.
>
> --
> users mailing list
> users at lists.fedoraproject.org
> To unsubscribe or change subscription options:
> https://admin.fedoraproject.org/mailman/listinfo/users
> Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> Have a question? Ask away: http://ask.fedoraproject.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.fedoraproject.org/pipermail/users/attachments/20140911/f8678600/attachment.html>