Add route from single ip to localhost. OSX Mavericks - macos

Question

on my MacbookPro 15'' Retina, with OSX 10.9.4, I want to be able to:
route all single ip traffic to localhost.
My Goal is this:
I type http://192.168.1.54/test.html in the browser and I get what I normally get from
http://localhost/test.html
This is what I tried (en4 is the one I get internet connection from):
______$ sudo route add 192.168.1.54 localhost -ifp en4
checking the list
______$ sudo route add 192.168.1.54 localhost -ifp en4
add host 192.168.1.54: gateway localhost
______$ netstat -rn
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 192.168.1.1 UGSc 42 4 en4
127 127.0.0.1 UCS 0 3 lo0
127.0.0.1 127.0.0.1 UH 50 15380 lo0
...
192.168.1.54 127.0.0.1 UGHS 0 0 en4
...
But the ping of 192.168.1.54 isn't working
I tried also the loopback interface with
______$ sudo route add 192.168.1.54 localhost -ifp lo0
getting the same result: nothing.
I'm kind of a newbie in this stuff, so any help will be great

Answer 1

Fire up your Terminal and type the following:
sudo ifconfig lo0 alias 192.168.66.66
After entering your password, that will redirect requests for 192.168.66.66 to the localhost/loopback adapter.
And if you need to remove this redirect, try
sudo ifconfig lo0 -alias 192.168.66.66
Source: http://www.vincecutting.co.uk/web-development/redirect-ip-address-back-to-localhost-on-mac-osx/

Answer 2

You'll need to create a mac virtual interface pointing to 192.168.1.54. Otherwise there is no one to reach at 192.168.1.54 and hence why your ping is failing.
In linux it's pretty straight forward to create additional virtual interfaces.
On my mac osx machine I was able to go into Systems Preferences --> Network
then hit the + sign to add an additional interfaces.
I picked Ethernet as my interface type and assigned the address of 192.168.1.54, 255.255.255.0 subnet mask and 192.168.1.1 as the default router.
Now both my primary 192.168.1.10 and my virtual 192.168.1.54 interfaces are up and pingable.
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=10b<RXCSUM,TXCSUM,VLAN_HWTAGGING,AV>
ether 0c:4d:e9:9a:1c:a3
inet6 fe80::e4d:e9ff:e936:1ca3%en0 prefixlen 64 scopeid 0x4
inet 192.168.1.10 netmask 0xffffff00 broadcast 192.168.1.255
inet 192.168.1.54 netmask 0xffffff00 broadcast 192.168.1.255
nd6 options=1<PERFORMNUD>
media: autoselect (100baseTX <full-duplex>)
status: active
My-Book-Pro:~ root# ping 192.168.1.10
PING 192.168.1.10 (192.168.1.10): 56 data bytes
64 bytes from 192.168.1.10: icmp_seq=0 ttl=64 time=0.095 ms
64 bytes from 192.168.1.10: icmp_seq=1 ttl=64 time=0.101 ms
My-MacBook-Pro:~ root# ping 192.168.1.54
PING 192.168.1.54 (192.168.1.54): 56 data bytes
64 bytes from 192.168.1.54: icmp_seq=0 ttl=64 time=0.085 ms
64 bytes from 192.168.1.54: icmp_seq=1 ttl=64 time=0.091 ms