1500 Byte MTU with PPPoE and RFC4638 works just fine.

The problems described 10 years ago in this thread where probably not even related to ROS itself.

How do you know that the backup actually succeeded? What if you pasted this in a box that has no flash/ for example or there is no free space? Will you see, understand and stop your actions in time? What if in the release on this particular box the script aborts when the winbox connection closes/dis...

Here is @rextended workaround layed out with commands and all: For device without flash remove the "flash/" prefix in the filename (in BOTH places): step 1: make backup /system backup save dont-encrypt=yes password=123 name=flash/confgbackup.backup step 2: plan script to restore backup in ...

The example of the need to change a WAN setting that causes the interface to flap is exactly on point. How would I reconfigure the WAN setting (like new PPPoE credentials) while connecting through this WAN interface, unless I have time based safe mode? @normis Ever vendor has some kind of "relo...

https://puck.nether.net/pipermail/outag ... 13806.html

For the record: RFC4638 was implemented back in 2015 in 6.33.