Telenet requires dhcp-server-identifier



  • Hi all,

    I am having a similar problem as http://forum.pfsense.org/index.php/topic,19149.msg107275.html#msg107275.

    Our ISP (Telenet in Belgium, office access subscription) does not always respond when the dhcp renewal request goes out (to the ip of the dhcp server). It does respond (and renews the ip) immediately when dhcp requests go to 255.255.255.255.

    This is a "known" issue over here, I solve it with "supersede dhcp-server-identifier 255.255.255.255;" on linux. It can take up to a few minutes if we don't use this work around.

    Is there a way to do this on pfSense?

    Ps, using latest stable (1.2.3)

    Thanks in advance for any suggestions,

    Kristof



  • Okay, I have logged some more on this issue. The appliance we use (from applianceshop.eu) is using the network cards: VIA VT6105M Rhine III 10/100BaseTX, 3 of them.

    Every hour this passes by in the system logs:

    Dec 6 09:54:43 	dhclient[57082]: bound to xx.xx.xx.xx -- renewal in 3600 seconds.
    Dec 6 10:54:43 	dhclient[57082]: DHCPREQUEST on vr1 to 195.130.132.102 port 67
    Dec 6 10:54:43 	dhclient[57082]: SENDING DIRECT
    ...
    Dec 6 10:55:36 	dhclient[57082]: DHCPREQUEST on vr1 to 195.130.132.102 port 67
    Dec 6 10:55:36 	dhclient[57082]: SENDING DIRECT
    Dec 6 10:55:50 	dhclient[57082]: DHCPREQUEST on vr1 to 255.255.255.255 port 67
    Dec 6 10:55:50 	dhclient[57082]: DHCPACK from 81.82.zz.zz
    Dec 6 10:55:51 	dhclient[57082]: bound to xx.xx.xx.xx -- renewal in 3600 seconds.
    
    Dec 6 11:55:50 	dhclient[57082]: DHCPREQUEST on vr1 to 195.130.132.102 port 67
    Dec 6 11:55:50 	dhclient[57082]: SENDING DIRECT
    ...
    Dec 6 11:56:33 	dhclient[57082]: DHCPREQUEST on vr1 to 195.130.132.102 port 67
    Dec 6 11:56:33 	dhclient[57082]: SENDING DIRECT
    Dec 6 11:56:52 	dhclient[57082]: DHCPREQUEST on vr1 to 255.255.255.255 port 67
    Dec 6 11:56:52 	dhclient[57082]: DHCPACK from 81.82.zz.zz
    Dec 6 11:56:52 	dhclient[57082]: bound to xx.xx.xx.xx -- renewal in 3600 seconds.
    

    On a similar setup (same provider) but with Linux and using the parameter "supersede dhcp-server-identifier 255.255.255.255;", I see this:

    Dec  6 12:04:29 fw dhclient: DHCPREQUEST on eth4 to 255.255.255.255 port 67
    Dec  6 12:04:29 fw dhclient: DHCPACK from 81.82.zz.zz
    Dec  6 12:04:29 fw dhclient: bound to yy.yy.yy.yy -- renewal in 3592 seconds.
    

    Any workaround to get the same behaviour on pfsense 1.2.3 ?

    Cheers,
    Kristof.


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