Using the same figure as in question 4b), Suppose the network operator is taking link d-c (and c-d) down for planned maintenance. The network operator wants to temporarily set the weight of the link to a higher value, to coax nodes to move away from paths that use the link without creating any blackholes or loops. What is the (minimum) sequence of weight settings for the link that ensures no packets destined to node c experience a blackhole or loop? Using the same figure as in question 4b), Suppose the network operator is taking link d-c (and c-d) down for planned maintenance. The network operator wants to temporarily set the weight of the link to a higher value, to coax nodes to move away from paths that use the link without creating any blackholes or loops. What is the (minimum) sequence of weight settings for the link that ensures no packets destined to node c experience a blackhole or loop