Comment 142 for bug 191889

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hce (hce) wrote : Re: [MASTER] Ubuntu's new "Offline Mode" feature cannot properly detect when there is a valid network available for use in many circumstances

I confirm this bug. depending on where I connect fromI use both network manager (for ethernet and wireless), and a custom udev script that brings up pppoatm automatically when the ADSL USB modem is connected (aetra modem, ueagle-atm driver - see http://atm.eagle-usb.org/wakka.php?wiki=UEagleAtmUdevEn).
network manager fails to detect that the ppp connection is up, and as a consequence evolution and firefox start in offline mode. yes, this is a nm bug, not mozilla or evolution's.
as I sometimes use it, uninstalling network manager is not an acceptable solution for me either.
it should just recognize that a ppp interface is up, even if it does not manage it, and set status to online.
at most, it could require the user to configure a certain interface as "not managed by nm but valid for online status".