Adam Sampson's ppp bookmarkshttps://bookmarks.offog.org/ats/pppAdam Sampson2013-08-08T10:47:23ZSimon Farnsworth's Thoughts: On PPPoA, PPPoE, ATM and ADSLhttps://bookmarks.offog.org/edit?url=http%3A%2F%2Fblog.farnz.org.uk%2F2010%2F02%2Fon-pppoa-pppoe-atm-and-adsl.html2013-08-08T10:47:23ZExcellent explanation of how ADSL works, in terms of where packet overhead gets added.