Arch Linux

wicked

Member

Registered: 2009-04-15

Posts: 12

Some things not loading

I've gotten almost everything to work perfectly on my first Arch install. The only problem that I've noticed is this. Some websites (google, gmail, youtube) will not load at all. I've tried firefox and lynx, as well as pinging them. Nothing. All other sites (that I've tried) work just fine. Google/gmail/youtube all work perfectly on windows on the same computer. I've read a lot of threads and think it may have something to do with those sites using IPv6. I really don't know enough about it to be sure, though. I am new to Arch as well.

rc.conf:

#
# /etc/rc.conf - Main Configuration for Arch Linux
#

# -----------------------------------------------------------------------
# LOCALIZATION
# -----------------------------------------------------------------------
#
# LOCALE: available languages can be listed with the 'locale -a' command
# HARDWARECLOCK: set to "UTC" or "localtime"
# USEDIRECTISA: use direct I/O requests instead of /dev/rtc for hwclock
# TIMEZONE: timezones are found in /usr/share/zoneinfo
# KEYMAP: keymaps are found in /usr/share/kbd/keymaps
# CONSOLEFONT: found in /usr/share/kbd/consolefonts (only needed for non-US)
# CONSOLEMAP: found in /usr/share/kbd/consoletrans
# USECOLOR: use ANSI color sequences in startup messages
#
LOCALE="en_US.utf8"
HARDWARECLOCK="local"
USEDIRECTISA="no"
TIMEZONE="America/New_York"
KEYMAP="us"
CONSOLEFONT=
CONSOLEMAP=
USECOLOR="yes"

# -----------------------------------------------------------------------
# HARDWARE
# -----------------------------------------------------------------------
#
# MOD_AUTOLOAD: Allow autoloading of modules at boot and when needed
# MOD_BLACKLIST: Prevent udev from loading these modules
# MODULES: Modules to load at boot-up. Prefix with a ! to blacklist.
#
# NOTE: Use of 'MOD_BLACKLIST' is deprecated. Please use ! in the MODULES array.
#
MOD_AUTOLOAD="yes"
#MOD_BLACKLIST=() #deprecated
MODULES=()

# Scan for LVM volume groups at startup, required if you use LVM
USELVM="no"

# -----------------------------------------------------------------------
# NETWORKING
# -----------------------------------------------------------------------
#
# HOSTNAME: Hostname of machine. Should also be put in /etc/hosts
#
HOSTNAME="gensokyo"

# Use 'ifconfig -a' or 'ls /sys/class/net/' to see all available interfaces.
#
# Interfaces to start at boot-up (in this order)
# Declare each interface then list in INTERFACES
#   - prefix an entry in INTERFACES with a ! to disable it
#   - no hyphens in your interface names - Bash doesn't like it
# 
# DHCP:     Set your interface to "dhcp" (eth0="dhcp")
# Wireless: See network profiles below
#
# eth0="eth0 192.168.0.2 netmask 255.255.255.0 broadcast 192.168.0.255"
eth0="dhcp"
INTERFACES=(eth0)

# Routes to start at boot-up (in this order)
# Declare each route then list in ROUTES
#   - prefix an entry in ROUTES with a ! to disable it
#
gateway="default gw 192.168.0.1"
ROUTES=(!gateway)
 
# Enable these network profiles at boot-up.  These are only useful
# if you happen to need multiple network configurations (ie, laptop users)
#   - set to 'menu' to present a menu during boot-up (dialog package required)
#   - prefix an entry with a ! to disable it
#
# Network profiles are found in /etc/network.d
#
# This now requires the netcfg package
#
#NETWORKS=(main)

# -----------------------------------------------------------------------
# DAEMONS
# -----------------------------------------------------------------------
#
# Daemons to start at boot-up (in this order)
#   - prefix a daemon with a ! to disable it
#   - prefix a daemon with a @ to start it up in the background
#
DAEMONS=(syslog-ng dbus iptables network netfs gdm crond hal alsa wicd)

I tried with and without "alias net-pf-10 off" in modprobe.conf. I've tried changing "network.dns.disableIPv6" in Firefox. It doesn't work either way. I've tried blacklisting the ipv6 module as well as loading it on startup. Like I said, I'm not entirely sure if this has to do with IPv6 or if it's something completely unrelated. Let me know if I should post the contents of any other files in order to help solve the problem. Thank you.

sonoran

Member

From: sonoran desert

Registered: 2009-01-12

Posts: 192

Re: Some things not loading

I don't think this is related to your problem, but I notice you have both hal and dbus in your daemons array.

The Wiki says hal will start dbus, and "If you have dbus in your list of daemons, remove it, since it can cause problems."

jleach

Member

Registered: 2008-07-24

Posts: 27

Re: Some things not loading

TCP window scaling and broken routers

Although a somewhat old problem, may still affect some.

wicked

Member

Registered: 2009-04-15

Posts: 12

Re: Some things not loading

Thank you for the replies. I have removed dbus from the daemons and added

net.ipv4.tcp_default_win_scale = 0

to /etc/sysctl.conf (and rebooted), as per instructions from http://lwn.net/Articles/92727/

The problem remains, these sites never load, and I am discovering even more sites that have this same issue. Hopefully someone has another idea that I can try. Aside from this weird problem, Arch has quickly become my favorite distro.

hbekel

Member

Registered: 2008-10-04

Posts: 311

Re: Some things not loading

I've had a similar issue some years back, and I had to set the MTU for all network devices involved to 1492. For a quick test, try

ifconfig eth0 mtu 1492

after dhcpcd has set up the interface. (I'm not sure how to configure a different mtu via dhcpcd). You may also have to adjust the MTU of your router accordingly.

wicked

Member

Registered: 2009-04-15

Posts: 12

Re: Some things not loading

We might be making progress. After I changed the mtu in the router and locally after I had gotten an IP, youtube.com will load in lynx (but not firefox, ironic), however google.com still won't load in either one. It stays at "making HTTP connection to google.com..."

This has really got me puzzled.

klixon

Member

From: Nederland

Registered: 2007-01-17

Posts: 525

Re: Some things not loading

Have you tried disabling the ipv6 module?

---

Stand back, intruder, or i'll blast you out of space! I am Klixon and I don't want any dealings with you human lifeforms. I'm a cyborg!

wicked

Member

Registered: 2009-04-15

Posts: 12

Re: Some things not loading

Have you tried disabling the ipv6 module?

Yes. In my first post I wrote "I tried with and without 'alias net-pf-10 off' in modprobe.conf" which is what that wiki page said to do. Sadly it didn't fix it. No other computer on this network is having the same problem, so it has to be some file or configuration on Arch that isn't allowing me to access those few websites.

wicked

Member

Registered: 2009-04-15

Posts: 12

Re: Some things not loading

An update: The root of the problem is Firestarter. I have Firestarter and iptables installed. Both of them are in my daemons list. Do I need them both in there?

When Firestarter is active, these sites do not load. Once I turn it off by clicking "stop firewall" the pages work normally. Maybe I need a different iptables.rules file? I'm not sure.

(edit) I am seeing a lot of "hits" in the firestarter events tab when I try to go to these sites. I tried allowing connections from the source (which is not needed on an ubuntu system on this network with the same setup) but it's the same.

I would really appreciate some help from someone who has Firestarter working.

Last edited by wicked (2009-04-18 19:02:57)