By default, LDP adjacencies will trigger the establishment of LSP based on the IP routing of the 32bit address.

According to this picture, we can judge:

IS-IS is a link state routing protocol that uses the SPF algorithm for routing calculations. A park has deployed IPv4 and IPv6 at the same time and runs IS-IS to achieve network interconnection. As shown in the figure, the network IPv4 and IPv6 have the same overhead, and R1 and R4 only support IPv4. By default, in the calculated IPv6 shortest path tree, the next hop device for R2 to access R6 is () (Note: The device name must be consistent with the figure, such as: R1)

Which of the following will not cause the VRRP backup group to oscillate?

According to this picture, what can we judge? (Multiple choice)