R2511-HP MSR Router Series High Availability Configuration Guide(V5)

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Figure 19 IPv4 VRRPv2 packet format
Figure 20 IPv6 VRRPv2 packet format
Figure 21 IPv4/IPv6 VRRPv3 packet format
A VRRP packet comprises the following fields:
...
Version Type Virtual Rtr ID Priority Count IPv6 Addrs
Auth Type Adver Int Checksum
IPv6 address 1
Authentication data 1
Authentication data 2
IPv6 address n
0 7 15 23 313