Booting from FlexBoot via IPv6

IPv6 boot must be enabled in FlexBoot menu. You can configure it to:

• IPv4 only

• IPv6 only

• IPv4 configuration and then IPv6

1. Run the RADVD service on a server in the network (preferably the DHCP server) and configure it to send a periodic Router Advertisement.

   Example:

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   interface eth1
   {
      AdvSendAdvert on;
      MinRtrAdvInterval 3;
      MaxRtrAdvInterval 5;
      AdvManagedFlag on;
      AdvOtherConfigFlag off;
      AdvHomeAgentFlag off;
    
      prefix fdfc::/64 {
         AdvOnLink on;
         AdvAutonomous off;
         AdvRouterAddr off;
      };
   };
           

2. Configure the DHCP service.

   Example:

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   default-lease-time 100;
   preferred-lifetime 60;
   option dhcp-renewal-time 30;
   allow leasequery;
   option dhcp6.preference 255;
   option dhcp6.rapid-commit;
   option dhcp6.bootfile6-url code 59 = string;
   \\
   subnet6 fdfc::/64 \{
           option dhcp6.bootfile-url "tftp://\[fdfc::123\]/ipv6_script";
           option dhcp6.name-servers fdfc::123;
           range6 fdfc::140 fdfc::200;
           range6 fdfc:: temporary;
   \}
           

   While the ipxe_script contents is:

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   #!ipxe
   \\
   #echo "Attempting to download linux OS over IPv6..."
   kernel tftp://\[fdfc::123\]/kernel/vmlinuz_new
   initrd tftp://\[fdfc::123\]/kernel/ramdisk_new.gz
   imgselect vmlinuz_new
   echo "Booting..."
   boot
           

   or over HTTP:

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   #!ipxe
   \\
   #echo "Attempting to download linux OS over IPv6..."
   kernel http://\[fdfc::123\]/kernel/vmlinuz_new
   initrd http://\[fdfc::123\]/kernel/ramdisk_new.gz
   imgselect vmlinuz_new
   echo "Booting..."
   boot