On Tue, Aug 28, 2018 at 8:09 PM Gabriel Ramirez <gabriello.ramirez@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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