# strace /sbin/iptables-restore
execve("/sbin/iptables-restore", ["/sbin/iptables-restore"], [/* 21 vars */]) = 0
brk(0)                                  = 0x8055000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=17182, ...}) = 0
mmap2(NULL, 17182, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f0e000
close(3)                                = 0
open("/lib/libdl.so.2", O_RDONLY)       = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`\f\0\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=10144, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f0d000
mmap2(NULL, 12412, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7f09000
mmap2(0xb7f0b000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb7f0b000
close(3)                                = 0
open("/lib/libnsl.so.1", O_RDONLY)      = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0P5\0\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=72784, ...}) = 0
mmap2(NULL, 83712, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7ef4000
mmap2(0xb7f05000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10) = 0xb7f05000
mmap2(0xb7f07000, 5888, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f07000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300Y\1"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1197180, ...}) = 0
mmap2(NULL, 1168764, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7dd6000
mmap2(0xb7eed000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x116) = 0xb7eed000
mmap2(0xb7ef1000, 9596, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7ef1000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7dd5000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7dd56b0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
mprotect(0xb7eed000, 8192, PROT_READ)   = 0
mprotect(0xb7f2d000, 4096, PROT_READ)   = 0
munmap(0xb7f0e000, 17182)               = 0
fstat64(0, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 1), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f12000
read(0,