set/getsockopt SO_LINGER problem

Hi,

I am trying to use get/setsockopt for SO_LINGER option but am facing a 
problem
I used setsockopt with opt as SO_LINGER passing linger structure with 
l_onoff as 1 and l_linger as 65535
but when I try to get back through getsockopt, I am getting l_onoff as 
128 and l_linger as -1.
For other values of l_linger (like 1, 2, 10) during set, though I get 
l_onoff as 128 but l_linger is returned correctly
Before getting the value, I typecast the (void *)optval to (linger *). 
Has anyone seen this problem before in Netbsd 3.0?

Regards
Prasanta