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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>To route a subnet in ipv6 there are two possibilities:<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>add route commands for the subnet in each computer<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>or use neighbor proxy in the router server<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I prefer neighbor proxy.<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>So I have to activate neighbor proxy in the router:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>sysctl -w net.ipv6.conf.all.proxy_ndp=1<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>and I have to add entries for each client in the subnet like <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>ip -6 neigh add proxy 2001:0:0:1:211:d8ff:fe97:3273 dev eth0<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>This works well but is lost on reboot.<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>For the sysctl command there is /etc/sysctl.conf for permanent configuration.<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>If I create a file route-eth0 in the directory /etc/sysconfig/network-scripts/ with the above ip neighbor command, the interface eth0 is immediately down.<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>Restart of network brings:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Bringing up interface eth0: Error: Unknown connection: 5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> [FAILED]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>All Interfaces are NetworkManager controlled.<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>Ask for help: <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>where can I store the command for a permanent configuration? <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>Shall I not further use NetworkManager?<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>Thank you for help in advance<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>Helmut<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>