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With SLAAC (StateLess Address AutoConfiguration), the router will configure itself an IPv6 address with the broadcasted prefix in addition to its already configured addresses if there is a router in the respective local network that broadcasts IPv6 address prefixes using router advertisement. If this is not required since no IPv6 or no Router Advertisement is used in a local IPv6 network, it is recommended to deactivate SLAAC for this local network

  1. Click in the lan Network → Interfaces menu in the IP networks section in the line of the network net1 on pencil, then on menu right to extended view and uncheck the checkbox Start SLAAC.

  2. Click on   SUBMIT  .

  3. Repeat the deactivation of SLAAC for each further local network (IP net 2-5), if this is active (checkbox Active is checked) and no IPv6 or no Router Advertisement is used in this local IPv6 network.

  4. Click on   ACTIVATE PROFILE  cog white  .