VRRP/4/CHKFAIL:The ISSU check failed because of the [reason].
The ISSU check on VRRP modules failed because specifications changed or were incompatible.
reason
failure in getting specification data: Failed to obtain the specification data.
specification change: Specifications changed.
incompatible version: Versions were incompatible.
Lossless ISSU was found not supported on VRRP modules after the specifications, incompatibility, and configurations were checked.