Arch Linux

Wiz

Member

Registered: 2008-06-04

Posts: 12

Static IPv6

I've got a small server in a non dhcp or anything environment (datacenter by ovh).
Switching from debian to archlinux have been pretty easy, but I still need to configure it's ipv6 address.

I tried locally to set two eth0 entries in rc.conf, like that :
eth0="eth0 192.168.1.6 netmask 255.255.255.0 broadcast 192.168.1.1"
eth0="eth0 add 2a01:e35:2e4f:b440:221:5cff:fe5a:1337/64"
But when I restart the network service I get a fail and the message : "SIOCSIFADDR: File exists" so it's a non go.
What's the best way to configure both ipv4 and ipv6 as static addresses ?
Google tells me that creating another daemon which just adds / removes the ipv6 address would work, but I'm not sure if this solution is the best one.
Doesn't archlinux provides something less dirty ?

cactus

Taco Eater

From: t͈̫̹ͨa͖͕͎̱͈ͨ͆ć̥̖̝o̫̫̼s͈̭̱̞͍̃!̰

Registered: 2004-05-25

Posts: 4,622

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Re: Static IPv6

just name the second variable eth0v6 or something, and add that to the interfaces line.

eth0v6="eth0 add 2a01:e35:2e4f:b440:221:5cff:fe5a:1337/64"
INTERFACES =( eth0 eth0v6 )

or something like that

EDIT: not sure your ipv6 address add syntax is ifconfig supported or not. I think arch uses ifconfig instead of iproute2 for its toolchain....buutt..not sure since I am not looking at an arch install right now.

Last edited by cactus (2011-01-09 06:34:55)

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ghen

Member

From: Belgium

Registered: 2010-08-31

Posts: 121

Re: Static IPv6

I have:

eth0_v6="eth0 inet6 add 2001:6f8:346::8/64"
INTERFACES=(eth0 eth0_v6)

Have a look at /etc/rc.d/network (ifup function).  It runs ifconfig for each item in INTERFACES.
When stopping the network it may warn that "eth0_v6" is not a valid interface (ifconfig <interface> down), but it's harmless.

For the gateway:

gateway6="default gw 2001:6f8:346::1"
ROUTES=(gateway gateway6)

Here it will parse the address and notice it's IPv6 (rtup function), and use "route -A inet add" appropriatly.

Wiz

Member

Registered: 2008-06-04

Posts: 12

Re: Static IPv6

That's clean enough to be fine, thank you very much !