[ts-7000] dpkg error

["ts7300" <>]

Hi,
   I am using ts7300 board with kernel 2.4.26 version.Problem I am
getting is that after running apt-get upgrade when run apt-get upgrade
error is coming.
-----------------------------------------------------------------
dpkg:error processing var/cache/apt/archives/libc6_2.7-18_arm.deb
subprocess pre-installation script returned error exit status 1
init:version 2.86 reloading
errors were encountred while processing:
/var/cache/apt/archeives/lib6_2.7-18_arm_deb
E:sub-process /usr/bin/dpkg returned an error code (1)
----------------------------------------------------------------
can sombody guide me why this error is coming.



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