Bug 128053 - the active-filter outbound option for ppp doesn't work
the active-filter outbound option for ppp doesn't work
Product: Fedora
Classification: Fedora
Component: ppp (Show other bugs)
i686 Linux
medium Severity medium
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Assigned To: Thomas Woerner
: 130648 (view as bug list)
Depends On:
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Reported: 2004-07-16 16:12 EDT by Bruno Wolff III
Modified: 2007-11-30 17:10 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2004-09-16 05:40:45 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Bruno Wolff III 2004-07-16 16:12:53 EDT
Description of problem:When one tries to activate a ppp device and
the 'active-filter outbound' option has been configured the activation
fails with the error message: pppd: error in active-filter expression: inbound/outbound not supported on
Version-Release number of selected component (if applicable):linktype 0

How reproducible:It happens all of the time

Steps to Reproduce:
1.Use network config to add the option 'activate-filter outbound' to a dialup ppp device
2.Attempt to activate the device
Actual results:The activation fails

Expected results:The activation should succeed

Additional info:I am using FC2 with the following development rpms installed:
Comment 1 Bruno Wolff III 2004-07-17 10:31:38 EDT
I tried this with kernel-2.6.7-1.492 and am seeing the same problem.
I am going to look at the pppd SRPM and see if I can find a work
around. If it is really a kernel problem, then I am not going
to be able to do much.
Comment 2 Thomas Woerner 2004-08-23 09:23:22 EDT
*** Bug 130648 has been marked as a duplicate of this bug. ***
Comment 3 Enrico Scholz 2004-08-24 14:12:53 EDT
This is caused by recent libpcap which does not support
outbound/inbound for PPP linktypes anymore.

SuSE seems to have a fix by generating a dummy DLT_LINUX_SLL packet
(which supports these qualifiers). See ppp-2.4.2-libpcap.diff in

This patch was used by Debian for a short time also, but they went
back to libpcap-0.7 (which supports outbound/inbound for DLT_PPP).
Comment 4 Thomas Woerner 2004-08-31 06:13:05 EDT
Can you please test this with kernel 2.6.8-1.533?
There is a fix in this kernel for ppp.
Comment 5 Enrico Scholz 2004-08-31 06:20:06 EDT
This is probably *not* a kernel issue. As said, support for 'outbound'
was be removed from libpcap-0.8.

You can test it yourself by executing 

| pppd active-filter outbound
Comment 6 Thomas Woerner 2004-09-16 05:40:45 EDT
Fixed in rawhide in rpm ppp-2.4.2-5 or newer.

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