Problem while running stack in Linux kernel space

[Ranjitsinh Wable]

Hello All,
 
    I have got my own IPv6 stack (not the Linux native
IPv6).
 
    Legend:
        NUT - Node Under Test - Where my stack runs
        TN - Testing Node - Where Linux native IPv6
stack runs
 
    When i insert IPv6 stack (compiled as a module) in
to the
    NUT kernel, it gets inserted in very smoothly. 
However,
    when i do ping6 from TN with -f (FLOOD) option to
NUT, 
    the NUT's kernel seems to be hanging. 
    But, i observed that IPv4 part of the NUT's kernel
still working 
    (because ping from TN to NUT still works).
 
    I am controlling NUT's kernel with KGDB (through
serial cable).
    If i see 'bt' in gdb, it shows that it is waiting
in sys_read.
    PS : I skipped the KGDB back trace in the above
description for clarity.