On 08/27/10 06:23 AM, 6lowpan issue tracker wrote:
#126: Short MAC address collision --------------------------------+------------------------------------------- Reporter: z...@… | Owner: sami...@… Type: defect | Status: new Priority: major | Milestone: Component: nd | Version: Severity: - | Keywords: --------------------------------+------------------------------------------- An EUI-64 node may want to use non-EUI-64 based IPv6 address for communication or it may want to register multiple addresses at the same time via multihop DAD mechanism. We need a way to verify that the additional IPv6-address and its corresponding link-layer address(non- EUI-64) are unique in a 6lowpan network. [ via multi-hop DAD mechanism]. However, for the address registration NS message, the node should use an EUI-64 based IPv6-address and corresponding MAC address to avoid any collision in the local link due to duplicate MAC-addresses.There are a couple different ways to allow an LL64 to be used during registration of a tentative (possibly non-unique) address. 1. Carry the address to be registered in the ARO for the initial registration of a tentative address. Use the address to be registered as the IP SRC address after that as in ND-12. No changes required to the multi-hop DAD mechanism. 2. Carry the address to be registered and the LLA always in the ARO, see proposal by Colin on the list.
3. Introduce an "errors-to" field in the ARO. Erik _______________________________________________ 6lowpan mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lowpan
