tree 3bafcc6aff8d74092c7ac83101aef8273415f34c
parent 19475e3de8351f56273ebce2360e405fbccf196c
author Abtin Keshavarzian <abtink@google.com> 1673977523 -0800
committer GitHub <noreply@github.com> 1673977523 -0800
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[mle] keep router table next hop and cost on REED to router promotion (#8657)

This commit updates `MleRouter` such that on promotion from REED to
router role, we keep the router table's next hop and cost as what we
had as a REED, i.e., our parent being the next hop towards all other
routers and we tracked its cost towards them. As an FED, device may
have also established links with a subset of neighboring routers. We
ensure to clear the link to these neighbor to avoid using them since
the neighboring router will drop messages from us till we re-establish
link using our new RLOC16.