[libsmi] smilint fails to parse SNMPv2-SMI

Hello, I tried doing syntax/semantics checking of SNMPV2-SMI using smilint & I came across error "SNMPv2-SMI:217: number `18446744073709551615' is out of range for SPPI 64bit unsigned numbers". Has anyone come across this issue?

Thanks & Regards Paresh Sawant