IPv6 stateless autoconfiguration

smith21 · October 10, 2011, 07:43:35 AM

hi guys, i get ipv6 run in my network, and now i want to implement stateless autoconfiguration,
may i ask ur kindness to help me with a complete tutorial?

regard

cholzhauer · October 10, 2011, 07:51:08 AM

What operating system? You need a system to do Router Advertisements

smith21 · October 10, 2011, 07:56:51 AM

am running centos, yeah i need the configuration fro RADVD, i tried it but still failed!

interface eth0

{
AdvSendAdvert on;
prefix 2001:c08:3700:100::/64
{
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};

};

i need the complete tutorial for the server as well for the client...

smith21 · October 10, 2011, 07:33:33 PM

anyone?

smith21 · October 10, 2011, 10:25:42 PM

i got one nice tutorial
http://mirrors.bieringer.de/Linux+IPv6-HOWTO/hints-daemons-radvd.html

is it possible to implement through wirelss? because it is written there that it is useful for LAN network? why? what are different between simple conf, special 6to4 conf and debugging? do i need to do some ip calculation for each client?

why it always used prefix /64 while i have two /48 and /64?

cholzhauer · October 11, 2011, 04:59:44 AM

Yes, you can use it for wireless too...you just need to change the interface that you're advertising.

You're not running 6to4 with HE, so I wouldn't worry about it

Use the debug setup if you're having issues with your setup

A /64 is the smallest range that most programs will accept, so that's what you're stuck using. HE gives you a /48 so you can have 64k of /64's (this is needed if you have more than one subnet

You don't need to do any calculation..RA is done for you based off the MAC address of the network adapter.

Jim Whitby · October 11, 2011, 05:35:42 AM

Quote from: smith21 on October 10, 2011, 07:56:51 AM
am running centos, yeah i need the configuration fro RADVD, i tried it but still failed!

interface eth0

{
AdvSendAdvert on;
prefix 2001:c08:3700:100::/64
{
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};

};

i need the complete tutorial for the server as well for the client...

How did it fail?
What is the output of radvdump?

smith21 · October 11, 2011, 07:30:28 AM

suppose my net shud be this way:

#ifconfig
eth0 Link encap:Ethernet HWaddr 00:26:18:EE:C6:4F
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:28 Base address:0xe000

eth1 Link encap:Ethernet HWaddr 00:24:01:D2:2B:D1
inet addr:202.47.88.XX Bcast:202.47.88.79 Mask:255.255.255.240
inet6 addr: fe80::224:1ff:fed2:2bd1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:311913 errors:0 dropped:0 overruns:0 frame:0
TX packets:105610 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:102114023 (97.3 MiB) TX bytes:13764699 (13.1 MiB)
Interrupt:20 Base address:0x8c00

he-ipv6 Link encap:IPv6-in-IPv4
inet6 addr: 2001:470:35:XXX::2/64 Scope:Global
inet6 addr: fe80::ca2f:584c/128 Scope:Link
UP POINTOPOINT RUNNING NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:1410 dropped:0 overruns:0 carrier:1410
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1593 errors:0 dropped:0 overruns:0 frame:0
TX packets:1593 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:224484 (219.2 KiB) TX bytes:224484 (219.2 KiB)

sit0 Link encap:IPv6-in-IPv4
inet6 addr: ::202.47.88.XX/96 Scope:Compat
inet6 addr: ::127.0.0.1/96 Scope:Unknown
UP RUNNING NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

sit1 Link encap:IPv6-in-IPv4
inet6 addr: fe80::ca2f:5843/64 Scope:Link
inet6 addr: 2001:470:35:XXX::2/64 Scope:Global
UP POINTOPOINT RUNNING NOARP MTU:1480 Metric:1
RX packets:92 errors:0 dropped:0 overruns:0 frame:0
TX packets:172 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:17746 (17.3 KiB) TX bytes:125612 (122.6 KiB)

which interface that's advertising in the net? i still confused about eth0 and eth1

cholzhauer · October 11, 2011, 08:22:18 AM

It doesn't like you're using eth0 for anything

eth1 has traffic and a public IP address.

You'll want to assign a IPv6 address to this interface too

smith21 · October 11, 2011, 10:03:25 AM

so u mean i shud use eth1?

cholzhauer · October 11, 2011, 10:05:27 AM

From what you've shown me, yes.

It looks like there is a network cable plugged into that interface, but it doesn't look like any traffic is flowing in or out.

smith21 · October 12, 2011, 11:05:41 PM

hi guys, i need ur help

i got prefix /64 and /48 from HE, but i used /64:
2001:470:xx:xxx::/64

radvd conf:
interface eth2 {
AdvSendAdvert on;
MinRtrAdvInterval 3;
prefix 2001:470:xx:xxx::/64 {
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};
};

now i've different ifonfig because i changed my NIC:
eth0 Link encap:Ethernet HWaddr 00:26:18:EE:C6:4F
inet addr:202.47.88.67 Bcast:202.47.88.79 Mask:255.255.255.240
inet6 addr: fe80::226:18ff:feee:c64f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:628364 errors:0 dropped:0 overruns:0 frame:0
TX packets:10502 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:67415880 (64.2 MiB) TX bytes:2127919 (2.0 MiB)
Interrupt:28 Base address:0xa000

eth2 Link encap:Ethernet HWaddr 00:40:F4:EA:7D:DD
inet addr:172.27.11.66 Bcast:172.27.11.255 Mask:255.255.255.0
inet6 addr: fe80::240:f4ff:feea:7ddd/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:327438 errors:336305 dropped:292246 overruns:336305 frame:0
TX packets:838 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:31261577 (29.8 MiB) TX bytes:86715 (84.6 KiB)
Interrupt:20 Base address:0x4c00

he-ipv6 Link encap:IPv6-in-IPv4
inet6 addr: fe80::ca2f:5843/128 Scope:Link
inet6 addr: 2001:470:35:270::2/64 Scope:Global
UP POINTOPOINT RUNNING NOARP MTU:1480 Metric:1
RX packets:459 errors:0 dropped:0 overruns:0 frame:0
TX packets:589 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:394222 (384.9 KiB) TX bytes:90240 (88.1 KiB)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:145 errors:0 dropped:0 overruns:0 frame:0
TX packets:145 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:14879 (14.5 KiB) TX bytes:14879 (14.5 KiB)

my client ifconfig:
eth0 Link encap:Ethernet HWaddr 00:e0:4c:87:0f:8e
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:29 address 0x2000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1568 errors:0 dropped:0 overruns:0 frame:0
TX packets:1568 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:720 (720.0 B) TX bytes:720 (720.0 B)

wlan0 Link encap:Ethernet HWaddr 48:5d:60:53:2f:6b
inet addr:172.27.11.111 Bcast:172.27.11.255 Mask:255.255.255.0
inet6 addr: fe80::4a5d:60ff:fe53:2f6b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:268742 errors:0 dropped:0 overruns:0 frame:0
TX packets:170810 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:345570258 (345.5 MB) TX bytes:19965989 (19.9 MB

and i try to connect them manually through eth2 setting.

successfully connect to client:
ping 172.27.11.111
PING 172.27.11.111 (172.27.11.111) 56(84) bytes of data.
64 bytes from 172.27.11.111: icmp_seq=1 ttl=64 time=13.9 ms
64 bytes from172.27.11.111: icmp_seq=2 ttl=64 time=1.93 ms
64 bytes from 172.27.11.111: icmp_seq=3 ttl=64 time=2.55 ms
^C
--- 172.27.11.111 ping statistics ---

radvdump:
[root@ip6 ~]# radvdump

^C

*doent give any response

and the client cant connect to the ipv6 yet? what shud i do?
is the connection between server and client false? thank u

cholzhauer · October 13, 2011, 04:07:29 AM

X'ing out IP addresses makes it hard to help

You need to assigna IPv6 address to every interface that you want to route/pass IPv6 traffic. If those interfaces are in different subnets, assign a /64 from your /48 to each subnet

smith21 · October 13, 2011, 04:51:01 AM

how to assign it?can u show me the way? i dont really know how to do that?

cholzhauer · October 13, 2011, 04:51:51 AM

http://www.cyberciti.biz/faq/rhel-redhat-fedora-centos-ipv6-network-configuration/

News:

IPv6 stateless autoconfiguration