PPPoE

From: Kim (kim_at_info.dk)
Date: 12/18/04

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To: debian-user@lists.debian.org

    Dear Debian Users

    I have been working with a network problem the last two days without any
    result. I am posting this here in the hope that perhaps someone else can
    understand what I can't seem to figure out.

    I am having to network card in my machine eth0 and eth1. eth0 is used in
    my local network at home and it is not the issue.

    eth1 is used to connect to my ISP. My ISP is using FWA technology.

    In my /etc/network/interfaces I used to have this:

    auto lo
    iface lo inet loopback

    auto eth1
    iface eth1 inet dhcp

    auto eth0
    iface eth0 inet static
    address 192.168.0.1
    netmask 255.255.255.0

    As you can see all very simple.

    Normally my ISP would use public IP's but has now decided to move to
    intern IP. This means that my eth1 now gets something like 10.x.x.x
    instead of the public one.

    Since I very much would like a public IP my ISP made me a PPPoE
    connection which I have tested on windows XP where it works perfektly.

    On debian I ran apt-get install pppoe pppoeconf
    I then ran the pppoeconf

    In the debian reference I read about using PPPoE and I then changed the
    /etc/network/interfaces to:

    auto lo
    iface lo inet loopback

    iface eth1 inet ppp
    provider dsl-provider

    auto eth0
    iface eth0 inet static
    address 192.168.0.1
    netmask 255.255.255.0

    When I use pon dsl-provider and then ifconfig I get:

    eth0 Link encap:Ethernet HWaddr 00:50:04:41:5A:67
               inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
               UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
               RX packets:10945 errors:0 dropped:0 overruns:0 frame:0
               TX packets:14005 errors:0 dropped:0 overruns:0 carrier:0
               collisions:0 txqueuelen:1000
               RX bytes:1169319 (1.1 MiB) TX bytes:4020685 (3.8 MiB)
               Interrupt:10 Base address:0xa000

    eth1 Link encap:Ethernet HWaddr 00:60:97:A5:79:5F
               inet addr:10.10.0.93 Bcast:10.31.1.255 Mask:255.255.254.0
               UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
               RX packets:47349 errors:0 dropped:0 overruns:0 frame:0
               TX packets:697 errors:0 dropped:0 overruns:0 carrier:0
               collisions:0 txqueuelen:1000
               RX bytes:4585915 (4.3 MiB) TX bytes:45761 (44.6 KiB)
               Interrupt:9 Base address:0x9800

    lo Link encap:Local Loopback
               inet addr:127.0.0.1 Mask:255.0.0.0
               UP LOOPBACK RUNNING MTU:16436 Metric:1
               RX packets:430 errors:0 dropped:0 overruns:0 frame:0
               TX packets:430 errors:0 dropped:0 overruns:0 carrier:0
               collisions:0 txqueuelen:0
               RX bytes:44762 (43.7 KiB) TX bytes:44762 (43.7 KiB)

    ppp0 Link encap:Point-to-Point Protocol
               inet addr:80.110.21.5 P-t-P:10.254.0.1 Mask:255.255.255.255
               UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1484 Metric:1
               RX packets:8 errors:1 dropped:0 overruns:0 frame:0
               TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
               collisions:0 txqueuelen:3
               RX bytes:649 (649.0 b) TX bytes:109 (109.0 b)

    All looks fine and ppp0 has got the right IP. If I run route I get:

    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use
    Iface
    10.254.0.1 * 255.255.255.255 UH 0 0 0 ppp0
    192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
    10.10.0.0 * 255.255.254.0 U 0 0 0 eth1
    default 10.254.0.1 0.0.0.0 UG 0 0 0 ppp0

    All looks fine. But when I ping I can't reach anything.

    ping www.google.dk
    ping: unknown host www.google.dk

    ping 212.242.40.3
    PING 212.242.40.3 (212.242.40.3): 56 data bytes
    ping: sendto: Operation not permitted
    ping: wrote 212.242.40.3 64 chars, ret=-1
    ping: sendto: Operation not permitted
    ping: wrote 212.242.40.3 64 chars, ret=-1

    --- 212.242.40.3 ping statistics ---
    2 packets transmitted, 0 packets received, 100% packet loss

    What am I doing wrong?

    The kernel is running with the necessary pppoe driver.

    Thanks in advance

    Regards,
    Kim 

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