It would be useful to have link-up and link-down event scripts for PPPoE client.
And please make “message” from Authenticate-Ack and Authenticate-Nak available for parsing.
Some carriers communicate DSL connection speed by using Authenticate-Ack message [PAP AuthAck id=0x1 "SRU=uploadspeed#SRD=downloadspeed#]:
https://www.ip-phone-forum.de/threads/sammelthema-für-f-b-mit-beta-netze-7490-7590.299281/page-3#post-2274697
https://www.onlinekosten.de/forum/showthread.php?p=2466544#post2466544