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Thomas Thanks Pieter > Subject: Re: NetworkManager: network selection > From: thaller redhat com > To: pieter cardoen hotmail com > CC: networkmanager-list gnome org > Date: Tue, 2 Jun 2015 21:36:41 +0200 > > On Di, 2015-06-02 at 20:56 +0200, Pieter Cardoen wrote: > > > > I have some questions about how networkmanager selects a network. > > > > How does the NetworkManager deamon decide which network to use if > > multiple network connections are available? > > Hi > > when a device is currently not connected, at various instances > autoconnect hits. For example when you plug-in your cable and carrier > -detect indicates a link. Or when Wi-Fi scanning indicates new visible > networks. > > So, in that case, NM will search through the non-connected connections > and choose a candidate to autoconnect. > > If there are multiple candidates, the one that was used most recently > will be used. > > > Is it possible to configure preferred networks? > > Yes. Such a candidate must have the "connection.autoconnect" property > set to "yes". This is the default. In nm-applet this is called > "Automatically connect to this network when it is available". > > > Is it possible to configure the NetworkManager to only connect to one > > WiFi network and ignore all other free networks? > > Yes, set all connection.autoconnect properties of the other connections > to "no". > > > Since 1.0, there is also a new property "connection.autoconnect > -priority". You can assign there a number, see > nmcli connection show CON-NAME > nmcli connection modify CON-NAME connection.autoconnect-priority 1 > man nm-settings > If there are multiple autoconnect candidates, those with higher numbers > will be preferred. > So, you could set the priority of the connection you prefer to "1", > leaving all others to their default at 0. > > > > Thomas |