[FS#1259] PPPoE disconnects under high upstream load

[LEDE Bugs]

The following task has a new comment added:

FS#1259 - PPPoE disconnects under high upstream load
User who did this - Weedy (weedy)

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This isn't a bug, it's "by design".

Since you're flooding your upload buffers on the router and modem the maintenance packets are taking too long and pppd thinks you have a dead link. LEDE borrowed some patches from Debian (I think) that will skip this issue for you.

You should still use QoS for interactivity reasons.

	# Adaptive/Smart keepalive
	option keepalive_adaptive 1 
	## lcp_failure,lcp_interval
	option keepalive "7,3"

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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1259#comment4108