RIPNG/3/INVLD_IF_MTU_F:RIPng could not run on interface [interface-name] with the MTU as [mtu-value].
The RIPng cannot run on the interface with an improper MTU.
[interface-name]
Indicates the interface name.
[mtu-value]
Indicates the value of the maximum transmission unit.
The MTU value on the interface was modified.