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<p>Hello Phil,</p>
<p>I ask the developers of the firewall whats the think. Thanks for helping me out so fast!</p>
<p>I lett you now when i found a solution.</p>
<p>Thanks you again Phil and Alan!</p>
<p>Michel</p>
<p> </p>
<p>On Sat, 16 Jul 2011 22:21:48 +0100, Phil Perry wrote:</p>
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<pre>On 16/07/11 20:49, Michel van Dop wrote:</pre>
<blockquote type="cite" style="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px; width:100%">Hello Phil, I try to load the module on this way: modprobe ip6t_TCPMSS And restart the firewall But same error in the firewall script: Enabling setting the maximum packet size via MSS /sbin/ip6tables -A FORWARD -o eth0 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu ERROR (2): ip6tables v1.3.5: Unknown arg `--clamp-mss-to-pmtu' Try `ip6tables -h' or 'ip6tables --help' for more information. /sbin/ip6tables -A OUTPUT -o eth0 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu ERROR (2): ip6tables v1.3.5: Unknown arg `--clamp-mss-to-pmtu' Try `ip6tables -h' or 'ip6tables --help' for more information. also try: modprobe xt_TCPMSS And when i do this : lsmod | grep TCPMSS xt_TCPMSS 12967 2 x_tables 18263 18 ip6t_rt,xt_tcpudp,iptable_nat,xt_TCPMSS,ip6t_LOG,ipt_LOG,ip6t_REJECT,ipt_REJECT,ip6table_mangle,iptable_mangle,xt_multiport,xt_state,xt_limit,xt_conntrack,ip6table_filter,ip6_tables,iptable_filter,ip_tables Before or ather the load i get same result of the lsmod grep TCPMMS. So that make no different for me. Thanks best regards, Michel</blockquote>
<pre>
OK, my guess from the error you see would be that the functionality you
are looking for is present in the kernel module but is maybe not yet
supported in the user space ip6tables tools given the age of el5. My
guess is you would also need to update ip6tables to obtain this
functionality.
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