Linux 云服务器配置 IPv6

wget https://gerryguan-1306210569.cos.ap-chongqing.myqcloud.com/scripts/config_ipv6.sh

chmod +x ./config_ipv6.sh  # 赋予执行权限
./config_ipv6.sh [网卡名称]   # 网卡名称请根据步骤1查询到的实际接口填写，本例以 eth0 为例
# 示例 1：./config_ipv6.sh eth0
# 示例 2：./config_ipv6.sh eth1

wget https://iso-1251783334.cos.ap-guangzhou.myqcloud.com/scripts/enable_ipv6.sh

 chmod +x ./enable_ipv6.sh
 ./enable_ipv6.sh [网卡名称]  
 # 示例 1：./enable_ipv6.sh eth0
 # 示例 2：./enable_ipv6.sh eth1

ip addr | grep inet6
或者
ifconfig | grep inet6

vim /etc/sysctl.conf

net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0

sysctl -p

sysctl -a | grep ipv6 | grep disable

vim /etc/sysconfig/network-scripts/ifcfg-eth0

DHCPV6C=yes

vim /etc/sysconfig/network-scripts/route6-eth0

default dev eth0 via fe80::feee:ffff:feff:ffff

service network restart
或者
systemctl restart network

ifconfig

ip addr | grep inet6
或者
ifconfig | grep inet6

vi /etc/modprobe.d/ipv6.conf

options ipv6 disable=0

vim /etc/sysctl.conf.first

net.ipv6.conf.all.disable_ipv6 = 0

vi /etc/sysconfig/network

NETWORKING_IPV6=yes
DHCPV6C=yes

vim /etc/sysconfig/network-scripts/route6-eth0

default dev eth0 via fe80::feee:ffff:feff:ffff

sysctl -a | grep ipv6 | grep disable

ifconfig

ip addr | grep inet6
或者
ifconfig | grep inet6

vi /etc/sysctl.conf

#net.ipv6.conf.all.disable_ipv6 = 1
#net.ipv6.conf.default.disable_ipv6 = 1
#net.ipv6.conf.lo.disable_ipv6 = 1

net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0

vi /etc/network/interfaces

auto eth0
iface eth0 inet6 static
address <IPv6地址>
netmask <子网前缀长度>
gateway <IPv6网关>

auto eth0
iface eth0 inet6 static
address <IPv6地址>
netmask <子网前缀长度>
gateway <IPv6网关>

auto eth0:0
iface eth0:0 inet6 static
address <IPv6地址1>
netmask <子网前缀长度>
gateway <IPv6网关>
auto eth0:1

iface eth0:1 inet6 static
address <IPv6地址2>
netmask <子网前缀长度>
gateway <IPv6网关>

vi /etc/netplan/50-cloud-init.yaml

network:
  version: 2
  ethernets:
    eth0:
      dhcp4: true                         # 开启 dhcp
      match:
        macaddress: 52:54:00:c3:4a:0e  # MAC 地址
      set-name: eth0                      # 网卡名
      gateway6: 2402:4e00:1018:9a01::1   # 设置IPv6网关地址

network:
  version: 2
  ethernets:
    eth0:
      dhcp4: true                         # 开启dhcp
      match:
        macaddress: 52:54:00:c3:4a:0e  # MAC地址
      set-name: eth0                      # 网卡名
      routes:
        - to: default
          via: "2402:4e00:1018:9a01::1"  # 设置IPv6网关地址

netplan apply

ip -6 route show | grep default

ip addr | grep inet6
或者
ifconfig | grep inet6

vim /etc/sysctl.conf

net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0

sysctl -p

ifconfig

netstat -tupln

ip -6 route add default dev eth0 via fe80::feee:ffff:feff:ffff

ip addr | grep inet6
或者
ifconfig | grep inet6

vi /etc/sysctl.conf

#net.ipv6.conf.all.disable_ipv6 = 1
#net.ipv6.conf.default.disable_ipv6 = 1
#net.ipv6.conf.lo.disable_ipv6 = 1

net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0

dev=$1
 index=$2
ip6=$3
 prefix_len=$4

 ifcfg_file="/etc/sysconfig/network/ifcfg-$dev"

 if [ ! -f "$ifcfg_file" ]; then
 touch "$ifcfg_file"
 fi

 echo -e "\\nIPADDR_$index='$ip6'\\nPREFIXLEN_$index='$prefix_len'" >> "$ifcfg_file"
 # update default IPv6 routing
:
 echo "default $netip::1 - $ifcfg_file" >> /etc/sysconfig/network/routes

 service network restart

./test.sh eth0 0 2402:4e00:1000:4200:0:8f0c:d527:b985 64

vi /etc/sysconfig/network/ifcfg-eth0

 IPADDR_0=<IPv6地址>
 PREFIXLEN_0=<子网前缀长度>

IPADDR_0=<IPv6地址>
PREFIXLEN_0=<子网前缀长度>

IPADDR_1=<IPv6地址1>
PREFIXLEN_1=<子网前缀长度>

IPADDR_2=<IPv6地址2>
PREFIXLEN_2=<子网前缀长度>

default <IPv6网关> - -

vi /etc/sysctl.conf

#net.ipv6.conf.all.disable_ipv6 = 1
#net.ipv6.conf.default.disable_ipv6 = 1
#net.ipv6.conf.lo.disable_ipv6 = 1

net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0

dev=$1
 index=$2
ip6=$3
 prefix_len=$4

 ifcfg_file="/etc/sysconfig/network/ifcfg-$dev"

 if [ ! -f "$ifcfg_file" ]; then
 touch "$ifcfg_file"
 fi
 echo -e "\\nIPADDR_$index='$ip6'\\nPREFIXLEN_$index='$prefix_len'" >> "$ifcfg_file"
 # update default IPv6 routing
netip=$(echo $ip6 | awk -F":" '{print $1":"$2":"$3":"$4}')
 echo "default $netip::1 - $ifcfg_file" >> /etc/sysconfig/network/routes
 service network restart

./test.sh eth0 0 2402:4e00:1000:4200:0:8f0c:d527:b985 64

vi /etc/sysconfig/network/ifcfg-eth0

IPADDR_0=<IPv6地址>
PREFIXLEN_0=<子网前缀长度>

IPADDR_0=<IPv6地址>
PREFIXLEN_0=<子网前缀长度>

IPADDR_1=<IPv6地址1>
PREFIXLEN_1=<子网前缀长度>

IPADDR_2=<IPv6地址2>
PREFIXLEN_2=<子网前缀长度>

default <IPv6网关> - -

+ dev 表示网卡设备名，FreeBSD 常见为 vtnet0、em0，不支持 eth0 命名。
+ ipv6 表示本机的 IPv6 地址，例如 2402:4e00:1000:4200:0:8f0c:d527:b985。
+ prefix_len 表示子网前缀长度，例如 64。
+ gw 表示 IPv6 网关，请在控制台子网详情中查看，例如 2402:4e00:1000:4200::1。

#!/bin/sh
# 用法：sh ./test.sh <网卡名> <IPv6地址> <前缀长度> <IPv6网关>

dev="$1"
ipv6="$2"
prefix_len="$3"
gw="$4"
rc_conf="/etc/rc.conf"

if [ -z "$dev" ] || [ -z "$ipv6" ] || [ -z "$prefix_len" ] || [ -z "$gw" ]; then
    echo "usage: $0 <dev> <ipv6> <prefix_len> <gateway>"
    exit 1
fi

set_key() {
    local file="$1"
    local key="$2"
    local value="$3"
    if grep -q "^${key}=" "$file" 2>/dev/null; then
        sed -i '' -e "s|^${key}=.*|${key}=\\"${value}\\"|" "$file"
    else
        echo "${key}=\\"${value}\\"" >> "$file"
    fi
}

# 移除镜像中预置的 IPv6 禁用项
sed -i '' -e "/^ipv6_network_interfaces=/d" "$rc_conf"

set_key "$rc_conf" ipv6_activate_all_interfaces "YES"
set_key "$rc_conf" "ifconfig_${dev}_ipv6" "inet6 ${ipv6} prefixlen ${prefix_len}"
set_key "$rc_conf" ipv6_defaultrouter "${gw}"

service netif restart
service routing restart

sh ./test.sh vtnet0 2402:4e00:1000:4200:0:8f0c:d527:b985 64 2402:4e00:1000:4200::1

ipv6_activate_all_interfaces="YES"
ifconfig_vtnet0_ipv6="inet6 <IPv6地址> prefixlen 64"
ipv6_defaultrouter="<IPv6网关>"

ipv6_activate_all_interfaces="YES"
ifconfig_vtnet0_ipv6="inet6 <IPv6地址1> prefixlen 64"
ifconfig_vtnet0_alias0="inet6 <IPv6地址2> prefixlen 64"
ipv6_defaultrouter="<IPv6网关>"

ifconfig vtnet0 inet6
netstat -rn -f inet6
ping6 <IPv6网关>

ip addr | grep inet6
或者
ifconfig | grep inet6

vim /etc/sysctl.conf

net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0

vim /etc/sysconfig/network-scripts/ifcfg-eth0

DHCPV6C=yes
IPV6INIT=yes

touch /etc/sysconfig/network-scripts/route6-eth0

vim /etc/sysconfig/network-scripts/route6-eth0

default dev eth0 via fe80::feee:ffff:feff:ffff

ifconfig

ip -6 route show | grep default

ip addr | grep inet6
或者
ifconfig | grep inet6

vim /etc/sysctl.conf

net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0

sysctl -p
sysctl -a | grep ipv6 | grep disable

nmcli device status
nmcli connection show
nmcli -f ipv6.method connection show <连接名称>

nmcli connection reload
nmcli connection up <连接名称>

ifconfig
ip -6 route show | grep default

vim /etc/NetworkManager/system-connections/eth0.nmconnection

[ipv6]
method=dhcp
addr-gen-mode=default
routes=::/0,fe80::feee:ffff:feff:ffff

[ipv6]
method=manual
address1=<IPv6地址>/64
routes=::/0,fe80::feee:ffff:feff:ffff

nmcli connection reload
nmcli connection up eth0

vim /etc/ssh/sshd_config

service sshd reload