radiusd crashing on zero length option61

[Chinnapaiyan, Nagamani]

We are observing radiusd crash when we receive zero length option61 in the dhcp request message.(we are using 2 months old 4.x)

3d 00
Option: (61) Client identifier
    Length: 0
    Value: <MISSING>


Thanks,
Nagamani Chinnapaiyan