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Test IPv6 functions on Linux

Introduction

本篇文章主要記錄測試IPv6功能時，會使用到的一些指令與方法。

Add/Delete IPv6 address

Add: 

ip -6 addr add 2001:db8:0:f101::1/64 dev eth0
Delete: 
ip addr del 2001:db8:0:f101::1/64 dev eth0

Delete IPv4 address

刪除IPv4 loopback: 

ip addr del 127.0.0.1/32 dev lo
刪除IPv4 address: 
ip addr del 192.168.0.1/16 dev eno1
用這種方法要還原設定只要重啟網路服務即可: 
service network restart

DHCP Configuration

先在某張網卡上設定static fc00::1/64，接著在dhcp的設定中加入: 

default-lease-time 2592000;
preferred-lifetime 604800;
option dhcp-renewal-time 3600;
option dhcp-rebinding-time 7200;
allow leasequery;
option dhcp6.info-refresh-time 21600;
dhcpv6-lease-file-name "/var/lib/dhcpd/dhcpd6.leases";
 
 
subnet6 fc00::/64 {
range6 fc00:0:0:0::10 fc00:0:0:0::1000;
}
最後重新啟動dhcpd6服務即可。

Reference