IPv6: Difference between revisions
From DWIKI
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===Check delegation=== | ===Check delegation=== | ||
dig 1.e.0.1.8.8.8.0.1.0.0.2.ip6.arpa ns | dig 1.e.0.1.8.8.8.0.1.0.0.2.ip6.arpa ns | ||
=IPv6 on Linux= | =IPv6 on Linux= | ||
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*http://www.cyberciti.biz/faq/debian-linux-ipv6-networking-configuration/ | *http://www.cyberciti.biz/faq/debian-linux-ipv6-networking-configuration/ | ||
*http://ipv6.raphnet.net/ | *http://ipv6.raphnet.net/ | ||
==Configuring IPv6 on RedHat== | |||
In /etc/sysconfig/network-scripts/ifcfg-eth0 | |||
IPV6ADDRESS | |||
=Protocols and Acronyms= | =Protocols and Acronyms= | ||
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*[https://en.wikipedia.org/wiki/IPv6#Stateless_address_autoconfiguration_(SLAAC) SLAAC on Wikipedia] | *[https://en.wikipedia.org/wiki/IPv6#Stateless_address_autoconfiguration_(SLAAC) SLAAC on Wikipedia] | ||
==NS | ==Neighbor Table== | ||
*[https://www.cisco.com/assets/sol/sb/Switches_Emulators_v2_2_015/help/nk_configuring_ip_information11.html Defining IPv6 Neighbors Information] | |||
*https://www.sciencedirect.com/topics/computer-science/neighbor-discovery | |||
===States=== | |||
*Incomplete — Address Resolution is in process. The neighbor has not yet responded. | |||
*Reachable — Neighbor is known to be reachable. | |||
*Stale — Previously-known neighbor is no longer reachable. No action is taken to verify its reachability until traffic must be sent. | |||
*Delay — Previously-known neighbor is no longer reachable. The interface is in Delay state for a predefined Delay Time. If no reachability confirmation is received, the state changes to Probe. | |||
*Probe — Neighbor is no longer known to be reachable and Unicast Neighbor Solicitation probes are being sent to verify reachability. | |||
===NS=== | |||
neighbour sollication | |||
===ND reachable time=== | |||
how long will neighbour be reachable | |||
===NDP=== | |||
Neighbor Discovery Protocol | |||
==DAD== | ==DAD== | ||
duplicate address detection | duplicate address detection | ||
==RA== | ==RA== | ||
Router advertisement | '''Router advertisement''' | ||
Sniff router advertisements | |||
tcpdump -n -i eth0 icmp6 and ip6[40] == 134 | |||
==global unicast address or GUA== | ==global unicast address or GUA== | ||
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The part of the IPv6 address space set aside for unicast addresses is structured into an address format that uses the first 48 bits for the routing prefix (like a network ID), the next 16 bits for a subnet ID, and the final 64 bits for an interface ID (like a host ID). | The part of the IPv6 address space set aside for unicast addresses is structured into an address format that uses the first 48 bits for the routing prefix (like a network ID), the next 16 bits for a subnet ID, and the final 64 bits for an interface ID (like a host ID). | ||
=Tools= | =Tools= | ||
Revision as of 16:08, 31 May 2022
IPv6 in general
Links
DNS
Check delegation
dig 1.e.0.1.8.8.8.0.1.0.0.2.ip6.arpa ns
IPv6 on Linux
- Linux IPv6 HOWTO
- IPv6 on Debian
- http://www.cyberciti.biz/faq/debian-linux-ipv6-networking-configuration/
- http://ipv6.raphnet.net/
Configuring IPv6 on RedHat
In /etc/sysconfig/network-scripts/ifcfg-eth0
IPV6ADDRESS
Protocols and Acronyms
SLAAC
Neighbor Table
- Defining IPv6 Neighbors Information
- https://www.sciencedirect.com/topics/computer-science/neighbor-discovery
States
- Incomplete — Address Resolution is in process. The neighbor has not yet responded.
- Reachable — Neighbor is known to be reachable.
- Stale — Previously-known neighbor is no longer reachable. No action is taken to verify its reachability until traffic must be sent.
- Delay — Previously-known neighbor is no longer reachable. The interface is in Delay state for a predefined Delay Time. If no reachability confirmation is received, the state changes to Probe.
- Probe — Neighbor is no longer known to be reachable and Unicast Neighbor Solicitation probes are being sent to verify reachability.
NS
neighbour sollication
ND reachable time
how long will neighbour be reachable
NDP
Neighbor Discovery Protocol
DAD
duplicate address detection
RA
Router advertisement
Sniff router advertisements
tcpdump -n -i eth0 icmp6 and ip6[40] == 134
global unicast address or GUA
http://www.tcpipguide.com/free/t_IPv6GlobalUnicastAddressFormat-2.htm
The part of the IPv6 address space set aside for unicast addresses is structured into an address format that uses the first 48 bits for the routing prefix (like a network ID), the next 16 bits for a subnet ID, and the final 64 bits for an interface ID (like a host ID).
Tools
- ipv6calc
- subnetcalc
FAQ
Can't ping link-local
ping -6: Invalid argument
or
Destination unreachable: Address unreachable
append "%eth0" or whatever interface name to the address
