In ICMC scenarios, some Lowpan nodes may need to talk to IPv6 nodes locally connected to them by a cheap wired network, such as RS-423, RS-422, RS-485. Such networks, if they are solely accessible by one Lowpan node, are called WiredStubs.
A useful feature would be for the IPv6 nodes on these WiredStubs to be accessible to other Lowpan nodes as if they were part of the Lowpan. This might also simplify the wire protocol, allowing the use of very cheap nodes (which today would be attached by rather idiosyncratic protocols such as Modbus) via IPv6.
The results of the autoconf BOF may be pertinent.