Hi all
When I run command on x86 and x86-64:
arptables -P INPUT ACCEPT
There are fine for me.
When I run the above command on x86-64 with multilib:
>>ERROR: Policy for `INPUT' offset 448 != underflow 0
>>arptables: Incompatible with this kernel
I used gdb follow it and found the difference that at the start of the
program in function TC_INIT in libarptc.incl.c ( line: 236 ):
getsockopt(sockfd, TC_IPPROTO, SO_GET_INFO, &info, &s)
It stored socket option information in info.
On x86 and x86-64:
info {name = "filter", '\000' <repeats 25 times>, valid_hooks = 7,
hook_entry = {0, 224, 448}, underflow = {0, 224, 448}, num_entries = 4,
size = 924}
~~~~~~~~~~~~~~~~~~~~~
ldd `which arptables`:
linux-gate.so.1 (0xb7789000)
libc.so.6 => /lib/libc.so.6 (0x48660000)
/lib/ld-linux.so.2 (0x4863a000)
~~~~~~~~~~~~~~~~~~~~~
On x86-64 with multilib:
info {name = "filter", '\000' <repeats 25 times>, valid_hooks = 7,
hook_entry = {0, 0, 0}, underflow = {0, 0, 0}, num_entries = 4, size
= 924}
~~~~~~~~~~~~~~~~~~~~~
ldd `which arptables`:
linux-gate.so.1 (0xf7794000)
libc.so.6 => /lib/libc.so.6 (0xf75d6000)
/lib/ld-linux.so.2 (0xf7795000)
~~~~~~~~~~~~~~~~~~~~~
what wrong with it?
// Dengke
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