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(1) AIX 4.x's version of BPF is undocumented and somewhat unstandard; the
current BPF support code includes changes that should work around
that, but, lacking an AIX machine on which to compile it, we don't
know whether the BPF support for AIX will compile.
If it doesn't, or if the workarounds fail to make it work correctly,
you should send to tcpdump-workers@tcpdump.org a detailed bug report
(if the compile fails, send us the compile error messages; if it
compiles but fails to work correctly, send us as detailed as
possible a description of the symptoms, including indications of the
network link-layer type being wrong or time stamps being wrong).
If you fix the problems yourself, please send to patches@tcpdump.org
a patch, so we can incorporate them into the next release.
If you don't fix the problems yourself, you can, as a workaround,
make libpcap use DLPI instead of BPF.
This can be done by specifying the flag:
--with-pcap=dlpi
to the "configure" script for libpcap.
(2) Also, it is a good idea to have the latest version of the DLPI
driver on your system, since certain versions may be buggy and
cause your AIX system to crash. DLPI is included in the
fileset bos.rte.tty. I found that the DLPI driver that came with
AIX 4.3.2 was buggy, and had to upgrade to bos.rte.tty 4.3.2.4:
lslpp -l bos.rte.tty
bos.rte.tty 4.3.2.4 COMMITTED Base TTY Support and Commands
Updates for AIX filesets can be obtained from:
ftp://service.software.ibm.com/aix/fixes/
These updates can be installed with the smit program.
(3) After compiling libpcap, you need to make sure that the DLPI driver
is loaded. Type:
strload -q -d dlpi
If the result is:
dlpi: yes
then the DLPI driver is loaded correctly.
If it is:
dlpi: no
Then you need to type:
strload -f /etc/dlpi.conf
Check again with strload -q -d dlpi that the dlpi driver is loaded.
Alternatively, you can uncomment the lines for DLPI in
/etc/pse.conf and reboot the machine; this way DLPI will always
be loaded when you boot your system.
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