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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I try to set up<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>A centos 6 firewall<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>With “proxy-arp” (I know: arp is not supported in ipv6)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>with ipv6.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Arp does not exist for ipv6. So I have added: <o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span lang=EN-US>sysctl -w net.ipv6.conf.default.proxy_ndp=1<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>To use the neighbor proxy facility.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>How to activate ipv6 forwarding? As far as I have found, this changed in RHEL6 from 6.1 (/etc/sysconfig/network) to 6.2 (/etc/sysctl.conf). CentOS 6?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>So I have used<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> sysctl -w net.ipv6.conf.all.forwarding=1 as in RHEL 6.2<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>As in ipv4 I would prefer to proxy the clients behind the firewall. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>eth0 is WAN, eth1 is LAN.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I have read to use<o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span lang=EN-US>ip -6 neigh add proxy <ipv6 address of eth1> dev eth0<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>but <o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span lang=EN-US>ip -6 neigh show<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>shows nothing.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Then I have tried<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Ip -6 neigh add proxy <ipv6 address of client> dev eth0<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Same result.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Is there any How To for ipv6 routing and proxying for CentOS?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Best regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Helmut<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>