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Bug #5857

closed

VLANs on interface with 1500 MTU PPPoE end up with 1508 MTU

Added by Chris Buechler about 8 years ago. Updated about 8 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Category:
Interfaces
Target version:
Start date:
02/08/2016
Due date:
% Done:

100%

Estimated time:
Plus Target Version:
Release Notes:
Affected Version:
2.3
Affected Architecture:

Description

Issue described here:
https://github.com/pfsense/pfsense/pull/2598

though that PR won't work to fix since it changes jumbo frame VLAN behavior.

There doesn't appear to be any reason to maintain the behavior of forcing every VLAN to have the same MTU as its parent interface, or any reason to disregard the MTU configured on VLANs. Input validation prevents the problem circumstances there, not allowing VLANs' MTU to be > parent interface MTU.

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