Can't ping/telnet localhost. Points to a wrong public IP.

Question

kadishmal Author

Level 1

8 points

Can't ping/telnet localhost. Points to a wrong public IP.

I've been developing Node.js apps on my localhost on port 1337 for last two years with no problem as shown below.

$ node app

App started on port 1337

Today I wanted to test how things go with default port 80, so I did:

$ sudo node app

App started on port 80

But after that my network went crazy. Now I can't access any local address including localhost. When I ping to localhost it points to some weird public IP address (218.38.137.125) instead of 127.0.0.1.

$ ping localhost

PING localhost.local (218.38.137.125): 56 data bytes

...

218.38.137.125 is not my public IP address.

When I telnet I see the same wrong IP address:

$ telnet localhost

Trying 218.38.137.125...

telnet: connect to address 218.38.137.125: Connection refused

telnet: Unable to connect to remote host

My */etc/hosts* is the following:

127.0.0.1 localhost

255.255.255.255 broadcasthost

::1 localhost

fe80::1%lo0 localhost

**Can anybody suggest what's wrong?**

I'm completely out of guesses and can't even continue my work.

Posted on Jan 25, 2013 9:07 PM

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Answer 1

ashobe

Level 1

24 points

Jan 25, 2013 9:26 PM in response to kadishmal

try doing a "traceroute localhost" see where it jumps to that address.

That address is a Korean subnet range.

[ Network Information ]

IPv4 Address : 218.38.0.0 - 218.39.255.255 (/15)

Service Name : broadNnet

Organization Name : SK Broadband Co Ltd

Organization ID : ORG3930

Address : 267, Seoul Namdaemunno 5(o)-ga Jung-gu SK NamsanGreen Bldg.

Zip Code : 100-711

Registration Date : 20021218

More specific assignment information is as follows.

[ Network Information ]

IPv4 Address : 218.38.136.0 - 218.38.139.255 (/22)

Network Name : HANANET-INFRA

Organization Name : SK Broadband Co Ltd

Organization ID : ORG3930

Address : 267, Seoul Namdaemunno 5(o)-ga Jung-gu SK NamsanGreen Bldg.

Zip Code : 100-711

Registration Date : 20041015

Publishes : Y

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Answer 2

kadishmal Author

Level 1

8 points

Jan 25, 2013 9:34 PM in response to ashobe

Yes, I also checked on the Web. But I found the problem which happens to be the same as in https://discussions.apple.com/thread/4442142?answerId=20103434022#20103434022.

When I "file -b /etc/hosts", it outputs ASCII English text, with CR line terminators while it should output only ASCII English text.

This is because I used Sublime Text 2 to edit /etc/hosts. Copying and pasting its contents via "vi" fixed everything.

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