### ifconfig - 2007-03-22 19:59 ###

eth0      Link encap:Ethernet  HWaddr 00:09:5B:07:55:CC  
          inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
          ...

eth1      Link encap:Ethernet  HWaddr 00:0D:88:37:65:A0  
          inet addr:216.144.204.42  Bcast:216.144.204.47  Mask:255.255.255.248
          ...

eth1:0    Link encap:Ethernet  HWaddr 00:0D:88:37:65:A0  
          inet addr:216.144.204.43  Bcast:216.144.204.47  Mask:255.255.255.248
          ...

### netmasq -L - 2005-05-20 18:17 ###

Table:  nat
  Chain PREROUTING (policy ACCEPT 28 packets, 2286 bytes)
  target     prot opt in     out     source               destination         
  
  Chain POSTROUTING (policy ACCEPT 7 packets, 1287 bytes)
  target     prot opt in     out     source               destination         
  masq_eth1  all  --  *      eth1    0.0.0.0/0            0.0.0.0/0          
  
  Chain OUTPUT (policy ACCEPT 24 packets, 2968 bytes)
  target     prot opt in     out     source               destination         
  
  Chain masq_eth1 (1 references)
  target     prot opt in     out     source               destination         
  LOG        all  --  *      eth1    0.0.0.0/0            0.0.0.0/0 ...
  MASQUERADE all  --  *      eth1    0.0.0.0/0            0.0.0.0/0          

### netmasq -L - 2006-03-22 20:04 ###

Table:  nat
  Chain PREROUTING (policy ACCEPT 7066K packets, 859M bytes)
  target     prot opt in     out     source               destination         
  
  Chain POSTROUTING (policy ACCEPT 1432K packets, 102M bytes)
  target     prot opt in     out     source               destination         
  masq_eth1  all  --  *      eth1    0.0.0.0/0            0.0.0.0/0           
  masq_eth1  all  --  *      eth1    0.0.0.0/0            0.0.0.0/0           
  
  Chain OUTPUT (policy ACCEPT 4706K packets, 352M bytes)
  target     prot opt in     out     source               destination         
  
  Chain masq_eth1 (2 references)
  target     prot opt in     out     source               destination         
  LOG        all  --  *      eth1    0.0.0.0/0            0.0.0.0/0 ...
  LOG        all  --  *      eth1    0.0.0.0/0            0.0.0.0/0 ...

### strace.0322.1958.txt ###

open("/lib/iptables/libipt_MASQUERADE.so", 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\340\3\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=3152, ...}) = 0
old_mmap(NULL, 6592, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x40018000
old_mmap(0x40019000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0x40019000
close(3)                                = 0

socket(PF_INET, SOCK_RAW, IPPROTO_RAW)  = 3
getsockopt(3, SOL_IP, 0x40 /* IP_??? */, "nat\0"..., [84]) = 0
getsockopt(3, SOL_IP, 0x41 /* IP_??? */, "nat\0"..., [1748]) = 0
setsockopt(3, SOL_IP, 0x40 /* IP_??? */, "nat\0"..., 1968) = -1 EINVAL (Invalid argument)
write(2, "iptables: Invalid argument\n", 27) = 27
exit_group(1)                           = ?