What error you get? Can you paste exact error message here?
I don't think so you have 32bit iptables installed. 64bit kernel and 64 bit linux should have 64 bit iptables command. A quick way to verify this:
Code:
ldd $(which iptables)
Output
Code:
libdl.so.2 => /lib64/libdl.so.2 (0x00000036f3000000)
libc.so.6 => /lib64/libc.so.6 (0x00000036f2c00000)
/lib64/ld-linux-x86-64.so.2 (0x00000036f2800000)
You see everything is linked against 64bit libs. It may be possible to have 32bit binary.. let me know exact error