Pfsense-1.0.1-CVS-12-28-2006 / MTU does not change

  • from webgui - changing MTU on a PPPoE connection / WAN, does not work.

    I set MTU = 1000 under "interfaces" -> "WAN" (pppoe) and reboot.

    after reboot, pppoe get established - but launching ifconfig, returns:

    ng0: flags=88d1 <up,pointopoint,running,noarp,simplex,multicast>mtu 1492
            inet –> netmask 0xffffffff
            inet6 fe80::240:f4ff:fe8a:485f%ng0 prefixlen 64 scopeid 0x7

    Looking into /var/etc/mpd.conf:

    set link mtu 1492


  • There have been no changes related to any of this…

  • does it work for you, changing PPPoE MTU?


  • I don't use PPPoE.  Regadless, no code has been changed in RELENG_1 that has anything to do with MSS/MTU, etc.

  • mpd has three mtu change points

    all can be found in /etc/inc/ under the pppoe function.

    test first with ping to see where this needs to be before you start to set it

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