ipv6_sfr_adsl
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ipv6_sfr_adsl [2014/01/12 01:46] – created samer | ipv6_sfr_adsl [2014/01/16 17:26] (current) – [IPv6 Packet Capture] samer | ||
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- | SFR has now activated the IPv6 support on its ADSL boxes. Here are some snapshots of the configuration interface of a NeufBox 4 : | + | ====== IPv6 with SFR ====== |
+ | |||
+ | SFR has activated | ||
[{{ : | [{{ : | ||
[{{ : | [{{ : | ||
Line 11: | Line 13: | ||
* First seen on: 2011-03-23 12:03:17 | * First seen on: 2011-03-23 12:03:17 | ||
- | Figure 3 gives an overview of the Internet v6 ecosystem in France obtained with the autonomous system map tool. | + | Figure 3 (click to get full size image) |
- | | + | [[http://goo.gl/fAUpgs|{{ : |
- | [[www.google.com | + | |
+ | Note the high IPv6 connectivity of [[http:// | ||
- | Note the high IPv6 connectivity of Hurricane and Lambdanet as foreign providers and Neotelecoms as an internal provider. | ||
A traceroute6 enables to verify the connectivity: | A traceroute6 enables to verify the connectivity: | ||
+ | < | ||
$ traceroute6 -n ipv6.google.com | $ traceroute6 -n ipv6.google.com | ||
traceroute6 to ipv6.l.google.com (2a00: | traceroute6 to ipv6.l.google.com (2a00: | ||
Line 33: | Line 36: | ||
8 2001: | 8 2001: | ||
9 2a00: | 9 2a00: | ||
+ | </ | ||
+ | |||
+ | ===== IPv6 Packet Capture ===== | ||
+ | |||
+ | The SFR ADSL box, as a typical IPv6 router, sends unsolicited Router Advertisement messages pseudo-periodically and solicited Router Advertisement messages in response to the receipt of a Router Solicitation message. The Router Advertisement message contains the information required by hosts to determine the link prefixes, the link MTU, whether or not to use address autoconfiguration, | ||
+ | |||
+ | - The router lifetime is set to the default 30 minute value. | ||
+ | - The prefix length is /64 (part of the /56 prefix announced on the web interface as seen in Figure 2). | ||
+ | - The valid lifetime is equal to the preferred lifetime! A typical valid lifetime value is greater than the preferred lifetime in order to enable a soft renumbering of the hosts. | ||
+ | - A recursive DNS server is given according to the recent [[http:// | ||
+ | - The Home Agent Flag is set and a Home Agent option is included int he RA! This indicates that the NeufBox is serving as a home agent on this link, according to [[http:// | ||
+ | |||
+ | < | ||
+ | No. Time Source Destination Protocol Info | ||
+ | 88 30.577228 fe80:: | ||
- | + | Frame 88: 150 bytes on wire (1200 bits), 150 bytes captured (1200 bits) | |
+ | Ethernet II, Src: Sfr_f2: | ||
+ | Internet Protocol Version 6, Src: fe80:: | ||
+ | Internet Control Message Protocol v6 | ||
+ | Type: 134 (Router advertisement) | ||
+ | Code: 0 | ||
+ | Checksum: 0xe611 [correct] | ||
+ | Cur hop limit: 64 | ||
+ | Flags: 0x20 | ||
+ | Router lifetime: 1800 | ||
+ | Reachable time: 0 | ||
+ | Retrans timer: 0 | ||
+ | ICMPv6 Option (Prefix information) | ||
+ | Type: Prefix information (3) | ||
+ | Length: 32 | ||
+ | Prefix Length: 64 | ||
+ | Flags: 0xe0 | ||
+ | Valid lifetime: 604800 | ||
+ | Preferred lifetime: 604800 | ||
+ | Reserved | ||
+ | Prefix: 2a02: | ||
+ | ICMPv6 Option (Recursive DNS Server) | ||
+ | Type: Recursive DNS Server (25) | ||
+ | Length: 24 | ||
+ | Reserved | ||
+ | Lifetime: 600 | ||
+ | Recursive DNS Servers: 2a02: | ||
+ | ICMPv6 Option (Source link-layer address) | ||
+ | Type: Source link-layer address (1) | ||
+ | Length: 8 | ||
+ | Link-layer address: 00: | ||
+ | ICMPv6 Option (Advertisement Interval) | ||
+ | Type: Advertisement Interval (7) | ||
+ | Length: 8 | ||
+ | Advertisement Interval: 600000 | ||
+ | ICMPv6 Option (Home Agent Information) | ||
+ | Type: Home Agent Information (8) | ||
+ | Length: 8 | ||
+ | Home Agent Preference: 10 | ||
+ | Home Agent Lifetime: 1800 | ||
+ | </ |
ipv6_sfr_adsl.1389487594.txt.gz · Last modified: 2014/01/12 01:46 by samer