[Solved] hosts file with ipv6 disabled

Hello community!
So I have disabled ipv6, as it was causing various issues and Comcast has not yet implemented ipv6 in my area. Disabling was no problem, but nowhere can i find information regarding whether or not to keep the ipv6 line in the hosts file. Should I comment it out?
For clarity I am referring to the ::1 line. Will commenting it out be problematic, or will keeping it be problematic, or does it not really matter? I know having an improperly configured hosts file can cause all sorts of network issues, so I am very curious.
Right now I have it commented out, and I have not noticed any real problems, but I also have a Realtek wireless card using rtl8192ce, which is not the most stable driver/connection. Thus my connection is kind of intermittently crappy. So I am curious if I am making my connection crappier than it was before.
Thanks in advance!
Edit: Of course as soon as I posted this, I found an answer. The Debian wiki recommends commenting it out when completely disabling ipv6. So to those who at least read my post, thanks!
Last edited by WonderWoofy (2012-08-19 20:19:44)

@WonderWoofy,
Do you have a link for the Debian wiki? I'd like to understand the reasoning.
To be honest, I didn't even realise that line was for ipv6. Since I've disabled it in sysctl.conf, I should probably consider commenting it out, too. Right now, I seem to be loading firewall modules for ipv6, mind, which seems like slightly more security than can be strictly necessary if the thing is disabled...
@ghen,
It isn't, that I know of, a matter of "figuring it out correctly". Having ipv6 enabled can screw up ipv4 connections. Having it enabled prevents me from connecting to the internet at all on one of the networks I use. As I understand it, a properly configured network shouldn't do this but when the official IT support people say the problem is that you have ipv6 enabled, you don't have much choice. (And it isn't as if there's anything to be gained by having it enabled.)

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sHyLoCk wrote:
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falstaff_ch wrote:
Just in case someone Googles this Thread, nowadays its
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Closing this old thread....

[SOLVED]Is my hosts file functioning as it should?

I'm using this script to update my hosts file with ad blocking settings.
#!/bin/bash
# Hosts file updater
HFSERVER="http://hostsfile.mine.nu.nyud.net"
HFILE="hosts.zip"
ORIGFILE="/etc/hosts.original"
clear
echo "-------------------------------------------------------------"
echo "This script will update your Hosts file to the latest version"
echo "Your original Hosts file will be renamed to $ORIGFILE"
echo "-------------------------------------------------------------"
echo ""
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#echo "-------------------------------------------------------------"
echo "As a side-effect of this script, any changes you wish to make"
echo "persistent in the hosts file should be made to $ORIGFILE"
echo "because /etc/hosts will be respawned from that file and the "
echo "newlist from the server each time this script runs."
exit
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fi
http://hostsfile.mine.nu/downloads/updatehosts.sh.txt
And my hosts file now looks like this:
# /etc/hosts: static lookup table for host names
#<ip-address> <hostname.domain.org> <hostname>
127.0.0.1 localhost.localdomain localhost pote
# The Hosts File Project http://hostsfile.mine.nu
# Global Advert Servers Blocklist - Personal Edition
# Release 13/09/2008
# Servers Verified as up and running 13/09/2008 (by dns exploration)
# Updated sorted and maintained by Andrew Short (sh0rtie)
# Contact: [email protected]
# A big thank you to all contributers (too many to mention)
# who really have made this project a success, well done :)
# Licensed under the LGPL a copy of the license may be viewed at
# http://www.gnu.org/licenses/lgpl.txt
# WARNING:
# This file is *extremely comprehensive* and some sites might be
# included here that you wish to visit, if this is the case you can
# deactivate the block on that site by placing a # (octothorpe)symbol
# before its entry, this will deactivate blocking on that server
# so for example #127.0.0.1 foobar.com
# will enable you to visit foobar.com or you can just simply delete
# the line that contains the site you wish to visit.
# NB:
# For some computer software updates you may need to disable
# this file in order to perform the update, if you have problems
# rename this file from "hosts" to "hosts.txt" reboot then perform
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# You must keep the below lines
127.0.0.1 localhost
127.0.0.1 pop3.norton.antivirus
127.0.0.1 pop3.spa.norton.antivirus
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#<ip-address> <hostname.domain.org> <hostname>
127.0.0.1 localhost.localdomain localhost pote
# End of file
# The Hosts File Project http://hostsfile.mine.nu
# Global Advert Servers Blocklist - Personal Edition
# Release 13/09/2008
# Servers Verified as up and running 13/09/2008 (by dns exploration)
# Updated sorted and maintained by Andrew Short (sh0rtie)
# Contact: [email protected]
# A big thank you to all contributers (too many to mention)
# who really have made this project a success, well done :)
# Licensed under the LGPL a copy of the license may be viewed at
# http://www.gnu.org/licenses/lgpl.txt
# WARNING:
# This file is *extremely comprehensive* and some sites might be
# included here that you wish to visit, if this is the case you can
# deactivate the block on that site by placing a # (octothorpe)symbol
# before its entry, this will deactivate blocking on that server
# so for example #127.0.0.1 foobar.com
# will enable you to visit foobar.com or you can just simply delete
# the line that contains the site you wish to visit.
# NB:
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# this file in order to perform the update, if you have problems
# rename this file from "hosts" to "hosts.txt" reboot then perform
# the update and then rename this file back to "hosts" to re-enable it
# You must keep the below lines
127.0.0.1 localhost
127.0.0.1 pop3.norton.antivirus
127.0.0.1 pop3.spa.norton.antivirus
127.0.0.1 admintds.megatds.com
127.0.0.1 ads.game.net
127.0.0.1 ads.tokgajah.com
127.0.0.1 dl.downloadhosting.com
127.0.0.1 game.treeloot.com
127.0.0.1 gw1.celticfestival.org
127.0.0.1 incestlove.info
127.0.0.1 klickcash.com
127.0.0.1 loomia.cachefly.net
127.0.0.1 pornoexit.com
127.0.0.1 privacy.virtumundo.com
127.0.0.1 redirect.virtumundo.com
127.0.0.1 tds.megatds.com
127.0.0.1 telebizz.org.uk
127.0.0.1 the2all.info
127.0.0.1 treeloot.com
127.0.0.1 ultraload.net
127.0.0.1 ultratds.com
127.0.0.1 v1.cc
127.0.0.1 virtumundo.com
# etc...
The thing i'm unsure of is this section:
# You must keep the below lines
127.0.0.1 localhost
Since localhost is already stated here:
#<ip-address> <hostname.domain.org> <hostname>
127.0.0.1 localhost.localdomain localhost pote
For now I've deleted the redundant localhost entry, since it seems to be there for windows compatability.
Is there any harm in leaving that entry?
Last edited by verve (2008-11-29 04:08:29)

Not as far as I know.
It probably just re-encounters the localhost hostname and either dumbly re-adds it to the internal table or ignores it. In any case, no logically discernible harm done.
-dav7

Unable to edit Hosts file in Win7 Home Prem 64bit.

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