i realize i'm probably making the same post as a bunch of other people, and that the aswer is fully dependent on each ISP specifically, but given there's no one large page where people try to troubleshoot this, my only 2 options seem to be to make another post here, and hope people's experience match with mine, or waste a bunch of time changing settings i barely know what are changing (i have very superficial knowledge of ipv6 or router advertisements), and potently break internet access when other people are using it. just calling the ISP and asking for specifics is probably out of the question, as i seemingly can't reach someone who knows crap about what i'm asking them, unless you file a full blown complaint here, and wait something like 15 to 30 days quite often.
with that all out of the way, my ISP is Tim Fibra (Brazil). when you set their router to bridge mode it provides you with PPPoe credetials, and those work no problem for ipv4, but then trying to set a few different combinations of ipv6 settings (such as requesting prefix via the ipv4 connection) i won't even get a active gateway, it stays a "pending" through and through no matter what i do
ideas?
appreciate the help
-peuga