Networking at FUDCon

Chris Tyler's Blog

Networking at FUDCon Wed, Dec 2. 2009


What happens when you get 170+ geeks together? You melt the network, of course!

Two network-related suggestions for FUDCon:

(1) Disable IPv6 DNS support in Firefox by going to the pseudo-URL about:config and then changing the value of network.dns.disableIPv6 to true. This will prevent Firefox for waiting for IPv6 timeouts before trying IPv4, reducing page load times for sites such as the Fedora wiki to less than a second instead of a minute or more (we need to figure out why this is happening on networks that don't serve IPv6 DHCP information -- apparently this is an issue on Macs as well, where network.dns.disableIPv6 defaults to true as a workaround. This affects more than just Firefox -- it's an issue with curl as well (but not wget).

(2) Bring an ethernet cable. We will have wired ports available in some of the hackfest rooms on Sunday and Monday to lighten the load on the wireless network, so please plug-in if you're doing high-bandwidth work (video uploading, or rsyncing your laptop Fedora repository). Speaking of local repositories, there is a local private Fedora mirror, http://belmont.senecac.on.ca/fedora/, which the Fedora mirror system will automatically select for you when you're on campus.

Some general FUDCon packing suggestions are on the wiki.

Posted by Chris Tyler in Fedora Planet, Seneca Planet Comments: (3) Trackbacks: (0)

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#1 - Tomasz said:
2009-12-02 16:42 - (Reply)

DHCPv6 is an extra. Basic way of distributing v6 adrresses and routes is by adverisment. Maybe some of your guests run “radvd” and claiming he's the router? You can check by doing ifconfig up to your interface and then checking with “ip -6 a”, “ip -6 r”, “ip -6 n”.

Proper way of fixing this stuff is of course providing real IPv6 connectivity. Just get one machine with tunnel to SIXXS and radvd advertising subnet.

#1.1 - Chris Tyler said:
2009-12-02 19:32 - (Reply)

I think the "proper way of fixing this stuff" also includes getting NM to do what I'm asking when I uncheck the IPv6 box in system-config-network.

#2 - Juan P. Daza 2009-12-03 16:52 - (Reply)

wow, that tip about firefox improves my browser rendering speed and even let me get into pages that never loaded.

Thank you.


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