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Full Discussion: 127.0.0.1 vs 0.0.0.0
Special Forums IP Networking 127.0.0.1 vs 0.0.0.0 Post 302952314 by Corona688 on Monday 17th of August 2015 11:19:45 AM
Old 08-17-2015
The culprit may be a "black hole" firewall response, which instead of refusing connection just stonewalls it by ignoring the attempt.
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HOSTS(5)							File Formats Manual							  HOSTS(5)

NAME
hosts - hostname to IP address database SYNOPSIS
/etc/hosts DESCRIPTION
The hosts database lists the IP addresses and the hostnames that translate to these IP addresses. It is used by nonamed(8) in a network without name servers. A simple /etc/hosts may look like this: 127.0.0.1 localhost 192.9.200.1 darask 192.9.200.2 burask The localhost entry lists a special address that refers to the local host itself (a kind of /dev/tty for hosts.) You should only list it if nonamed needs it! The other entries are actual machines. The file may contain comments marked with '#'. You can have aliases (more hostnames on the same line), but it is not recommended, because nonamed can't present them to the system as CNAME records. An often seen form like 192.9.200.1 darask.home.cs.vu.nl darask is harmless though, and has the small advantage that you can use the short name in /etc/ethers so rarpd can match it at boot time. FILES
/etc/hosts Hosts database. SEE ALSO
ethers(5), nonamed(8), rarpd(8), boot(8). AUTHOR
Kees J. Bot (kjb@cs.vu.nl) HOSTS(5)
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