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On Director:
net.ipv4.conf.default.rp_filter = 1
You should disable rp_filter.
Done. I set the above line to 0 and re-ran "sysctl -p"
All rp_filter settings must be 0, setting the default to 0 has no impact
on the running system. You must also set it to 0 for eth1 and/or all:
for i in /proc/sys/net/ipv4/conf/*/rp_filter; do
echo "Setting 0 to $i";
echo 0 > $i
done
Or I guess you add the relevant lines into your /etc/sysctl.conf.
Also check your kernel messages, e.g. the dropped packets from the
reverse path filtering go there if log_martians is enabled.
I enabled log_martians and I ran "tail -f /var/log/messages" and
"tail -f /var/log/dmesg" on all 3 machines while attempting another
telnet and nothing appeared in any of the 6 logs.
You've mentioned that ip_forward is 1 on the director, however I've just
seen that in your output it's set to 0. So what's the case now? From
what I remember though, it does not matter in kernels past 2.4. In 2.2
and earlier days ip_forward had to be 1.
Ok, so packets are dropped at the director.
Any ideas on why they are being dropped and not forwarded onto the
RS's?
I suspect rp_filter so far.
HTH,
Roberto Nibali, ratz
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