New kernel, network problems - solution?

From: Patrick Wiseman (pwiseman_at_mindspring.com)
Date: 05/22/04

  • Next message: J.S.Sahambi: "cdrom does not un-mounts" 
    Date: Sat, 22 May 2004 00:35:51 -0400 (EDT)
To: debian-user@lists.debian.org

    There have been several posts lately from people having
    post-upgraded-kernel network problems. I recently experienced a similar
    problem after installing a new kernel (network unreachable, Linksys device
    refusing connection, etc). When I tried unsuccessfully to 'ifup eth0' it
    was suggested that I needed to have CONFIG_FILTER configured. So, I went
    back and did that, and now everything's fine.

    But here's what the config help (for a 2.4.x kernel) says about
    CONFIG_FILTER:

    CONFIG_FILTER:

    The Linux Socket Filter is derived from the Berkeley Packet Filter.
    If you say Y here, user-space programs can attach a filter to any
    socket and thereby tell the kernel that it should allow or disallow
    certain types of data to get through the socket. Linux Socket
    Filtering works on all socket types except TCP for now. See the
    text file Documentation/networking/filter.txt for more
    information.

    You need to say Y here if you want to use PPP packet filtering
    (see the CONFIG_PPP_FILTER option below).

    If unsure, say N.

    If unsure, say N?? If you do that, networking breaks. This is not the
    first time I've had this experience (I have a bad memory when it comes to
    kernel options!), but I think that option should say, if unsure, say Y.

    Patrick 

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