MLPPP not working - Multilink is not Negociated by MPD5 - PPPOE Changes

[David_W]

As disabling shortseq hasn't solved the problem, I'd try a lower MRRU (you need to press the 'Advanced Options' button for that setting). The remote end is requesting an MRU of 1460, so I'd start by trying an MRRU of 1454 (which allows for the 6 byte multilink overhead). If that doesn't work, try an even lower MRRU - maybe try 1400.

If you find a working MRRU, start increasing MRRU until it fails, then use the highest setting that works. At that point, re-enable shortseq and see if things continue to work.

This is likely to involve finding working settings by trial and error unless you can get any hints from the ISP or from the logs of a system that successfully negotiates multilink with your ISP.