<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Just a follow-up: A fix has been merged to NetworkManager upstream: <a href="https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/499" class="">https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/499</a><div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 7 May 2020, at 16:14, Enrico Mioso <<a href="mailto:mrkiko.rs@gmail.com" class="">mrkiko.rs@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Hi!!<br class=""><br class="">The relevant code is in NetworkManager/src/devices/wwan . In my impression NM doesn't ask MM for the MTU, using it's own (default) values for that.<br class="">Note that it's only my impression from a superficial look.<br class=""><br class="">Hence, assuming I am right, I guess this isn't a MM related issue.<br class=""><br class="">Enrico<br class=""><br class=""><br class="">On Thu, 7 May 2020, Sven Schwermer wrote:<br class=""><br class=""><blockquote type="cite" class="">Date: Thu, 7 May 2020 15:43:51<br class="">From: Sven Schwermer <<a href="mailto:sven@svenschwermer.de" class="">sven@svenschwermer.de</a>><br class="">To: "ModemManager (development)" <<a href="mailto:modemmanager-devel@lists.freedesktop.org" class="">modemmanager-devel@lists.freedesktop.org</a>><br class="">Subject: Bearer MTU not recognised by NetworkManager<br class="">Hi,<br class=""><br class="">I’m observing that NetworkManager (v1.20.2) does not recognise the MTU (=1360) exposed by the ModemManager’s (v1.10.6) bearer object and instead uses some default value (=1500). This seems to lead to issues which are fixed when manually setting the MTU to a lower value. When checking the NetworkManager’s connection settings, gsm.mtu is set to “auto". I’m observing this on a Quectel BG96 hooked up via QMI. My kernel version is 4.19.87.<br class=""><br class="">Is this a known issue? Is anyone aware whether this is fixed upstream?<br class=""><br class="">Thanks,<br class="">Sven<br class="">_______________________________________________<br class="">ModemManager-devel mailing list<br class=""><a href="mailto:ModemManager-devel@lists.freedesktop.org" class="">ModemManager-devel@lists.freedesktop.org</a><br class="">https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel</blockquote></div></div></blockquote></div><br class=""></div></body></html>