DHCPv6 with PD - WAN not allocated address



  • Hi,

    My ISP delegates a /56 via DHCP and expects my router (a Netgate SG-3100) to assign its WAN interface an address from that delegated subnet. Is this supported by pfSense (2.4.2)?

    I've successfully set it up to receive the /56 and assign it to the LAN interface (by tracking WAN) but I can't get it to pick an address (or subnet) for WAN.

    Regards,
    Björn Bylander



  • I don't know if that can be done but, as you've noticed, it's not needed for anything but management or diagnostics such as ping or traceroute.  With IPv6, routing is normally done over the link local address, not a routeable address.



  • With IPv6, routing is normally done over the link local address, not a routeable address.

    I thought so too. My router has the link local adress of the ISPs edge router as the default route but the ISPs helpdesk claims my router needs an adress on WAN from the delegated network.  :-\



  • @bjornbylander:

    With IPv6, routing is normally done over the link local address, not a routeable address.

    I thought so too. My router has the link local adress of the ISPs edge router as the default route but the ISPs helpdesk claims my router needs an adress on WAN from the delegated network.  :-\

    Does IPv6 work on your LAN and out to the Internet?  I expect so.  I suspect the person on the help desk may not entirely understand how IPv6 works.  If he insists that it's necessary, as him why you're able to access the Internet without it.  I bet you'll get a load of B.S., as is common when first line support goes beyond their limited expertise.  I've certainly had a few experiences with that.  ;)



  • @JKnott:

    @bjornbylander:

    With IPv6, routing is normally done over the link local address, not a routeable address.

    I thought so too. My router has the link local adress of the ISPs edge router as the default route but the ISPs helpdesk claims my router needs an adress on WAN from the delegated network.  :-\

    Does IPv6 work on your LAN and out to the Internet?  I expect so.  I suspect the person on the help desk may not entirely understand how IPv6 works.  If he insists that it's necessary, as him why you're able to access the Internet without it.  I bet you'll get a load of B.S., as is common when first line support goes beyond their limited expertise.  I've certainly had a few experiences with that.  ;)

    IPv6 works between the LAN hosts and external, global, addresses are sent to my router which send them on to the link-local address of the ISPs edge router which… either drops them or not. My router gets no return traffic in any way. You may very well be right about "expertise"  :-\



  • It works now. :) I didn't change anything however so my ISP must've done something.