force overwrite of package files

[fruity@freaknet.org]

Hello to the list,

I've got a modified iptables package with overwrite a lib from iptables:

dpkg: error processing
/root/local-packages/./iptables-mpls_1.4.3rc1-1_i386.deb (--unpack):
 trying to overwrite '/lib/libiptc.so.0.0.0', which is also in package
iptables 1.4.6-2

can I say something like --force-overwrite to live-helper?

thanks in advance

fruity