On Tue, Aug 28, 2018 at 8:09 PM Gabriel Ramirez <gabriello.rami...@gmail.com>
wrote:

> On 08/27/2018 02:31 PM, Chris Murphy wrote:
> > Hi,
> >
> > Summary: What I want is, for a Fedora 28 Server (Intel NUC) to always
> > prefer using wired connection if available, and fallback on wifi; not
> > just for outgoing connections but also when I do 'ssh
> > chris@f28s.local'. There is one AP/router that serves both wired and
> > wireless connections and both server and workstation.
>
> Hi,
>
> maybe turn off wifi when wired is up using script from:
>
> https://wiki.archlinux.org/index.php/NetworkManager#Mounting_of_NFS_shares
>
> regards,
>
> Gabriel
>

If you're lucky there's sometimes an option in laptop BIOSes to turn off
WiFi if the wired connection has link.

Not sure if a NUC would have that, but it might be worth a look.

Thomas




> > Out of the box this doesn't happen. So first questions are: should it
> > work out of the box? can it be made to work? and if so what do I need
> > to modify to make it work as described?
> >
> >
> > What I've learned so far:
> >
> > 1.
> > nmclic c show <connection uuid>
> >
> > connection.autoconnect-priority should be higher on the preferred
> connection.
> >
> > https://developer.gnome.org/NetworkManager/stable/nm-settings.html
> >
> > So I've picked a value of 1 for wired and 0 for wifi. That should mean
> > if I make an outgoing connection, it should always prefer wired. And
> > yet 'netstat -natp' shows this is not true, sometimes it's using the
> > wired path sometimes the wireless path, and I can't tell what the
> > pattern is. If any.
> >
> > 2.
> > If I 'scp <fileonworkstation> chris@f28s.local:/tmp' I more often than
> > not get clearly wifi speeds (and a connection check confirms it's
> > using the wifi ip), but sometimes it's wired. Again, I can't figure
> > out the pattern.
> >
> > 3.
> > If I disconnect the wired connection, yes everything is
> > deterministically wifi haha. But if I connect wired back in, the first
> > X connections (or maybe it's Y time) are always only wifi and not
> > wired. If I restart avahi manually, it becomes wired.
> >
> > Sooooo that means avahi might be playing a role here, it has no way of
> > defining preferred connection though that I can tell. But I don't know
> > anything about multicast and whether it can specify more than one
> > address for a host name, and with preference based on the
> > NetworkManager connection priority?
> >
> > Thanks,
> >
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