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问题[radvd](server)

Martin Hope
carloslockward
Asked: 2022-03-16 17:43:00 +0800 CST
  • 0

我正在尝试在 linux 机器上使用 ISC DHCPv6 设置一个简单的 ipv6 网络。

这是我的 dhcpd6.conf：

subnet6 beef:fade::/112 { 
   max-lease-time 3600;
   range6 beef:fade::100 beef:fade::fffe;
}

dhcpv6 服务器工作并将地址分配给指定范围内的连接主机，但是，连接的设备无法相互 ping 或 ping dhcpv6 服务器，因为它们使用 128 作为网络掩码。

上网查了一下，发现是因为没有RA。所以我下载并启动了 RADVD，启用了 ipv6 转发并且我的防火墙被禁用了。这是我的 radvd.conf：

interface enp1s0
{
    AdvSendAdvert on;
    MinRtrAdvInterval 3;
    MaxRtrAdvInterval 10;
    prefix beef:fade::/112
    {
        AdvOnLink on;
        AdvAutonomous off;
    };

};

但这导致 radvd 说：enp1s0 prefix length should be: 64. 但我不想要前缀长度 64。我希望能够在必要时将其设置为几乎任何长度。

我该怎么做呢？我唯一的要求是我必须使用 ISC DHCPv6 实现。

另外，假设我可以让它工作。当在 DHCPv6 服务器上启用防火墙时，我必须向我的防火墙添加哪些规则才能使其正常工作。

networking linux-networking isc-dhcp dhcpv6 radvd
Martin Hope
Marcus K
Asked: 2020-09-27 08:29:39 +0800 CST
  • 2

我一直在尝试让 IPv6 PD 与dhcpcd我的家庭服务器一起工作，ppp并radvd允许 SLAAC 工作并最终替换我的 ISP 提供的路由器。不幸的是，通过 RAdhcpcd在接口上接收的前缀ppp0仅被配置为该接口上的地址，而不是也被委托给正在运行的lan接口radvd。

我错过了什么？

/etc/dhcpcd.conf：

# Ignore changes on docker interfaces
denyinterfaces veth*

duid

# Persist interface configuration when dhcpcd exits.
persistent

option domain_name_servers, domain_name, domain_search, host_name
option interface_mtu

require dhcp_server_identifier

slaac private

noipv6rs
waitip 6
ipv6only

#Prefix Delegation
interface ppp0
option rapid_commit
ipv6rs
iaid 1
ia_pd 1/::/64 lan/0/64

#don't use ISP DNS servers
nohook resolv.conf

/etc/radvd.conf：

interface lan
{
    AdvSendAdvert on;
    prefix ::/64
    {
    AdvOnLink on;
         AdvAutonomous on;
         AdvRouterAddr on;
    };
};

lan和（我的wan.7ISP 需要 VLAN 7，所以这是 ppp 绑定的）接口由systemd-networkd（虽然 DHCP 不由它处理）管理，但ppp0由ppp.

networking ipv6 radvd dhcpcd
Martin Hope
Michael Hampton
Asked: 2012-07-10 10:35:38 +0800 CST
  • 5

我有一个新安装的 Windows Server 2008 R2 SP1 虚拟机，它完全无法访问任何 IPv6 网页，尽管显然具有适当的 IPv6 连接。此外，其他 Linux VM 也无法访问 IPv6 网站。

此设置以前工作正常，在虚拟机中具有完整的 IPv6 连接，并且在没有明显原因的情况下停止工作。

我所有的虚拟机都桥接到物理以太网，并从主机上的 radvd 接收公告。IPv6 在主机上正常工作，主机也是 IPv6 路由器。Wireshark 显示主机在收到 HTTP SYN 数据包后发回 ICMPv6 Destination Unreachable (Administratively prohibited)。

Internet Explorer 报告无法显示该网页，而 Google Chrome 仅显示 Oops！Chrome 无法连接到网页，没有错误编号。

我什至能够 ping 本地网关和 Google 的 IPv6 地址并进行 IPv6 DNS 查找。

PS C:\Users\Administrator> ping -6 fe80::6e62:6dff:fed1:dfad

Pinging fe80::6e62:6dff:fed1:dfad with 32 bytes of data:
Reply from fe80::6e62:6dff:fed1:dfad: time<1ms
Reply from fe80::6e62:6dff:fed1:dfad: time<1ms
Reply from fe80::6e62:6dff:fed1:dfad: time<1ms
Reply from fe80::6e62:6dff:fed1:dfad: time<1ms

Ping statistics for fe80::6e62:6dff:fed1:dfad:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms

PS C:\Users\Administrator> ping -6 www.google.com

Pinging www.l.google.com [2001:4860:800a::67] with 32 bytes of data:
Reply from 2001:4860:800a::67: time=43ms
Reply from 2001:4860:800a::67: time=42ms
Reply from 2001:4860:800a::67: time=46ms
Reply from 2001:4860:800a::67: time=42ms

Ping statistics for 2001:4860:800a::67:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 42ms, Maximum = 46ms, Average = 43ms

我的虚拟机配置如下所示：

PS C:\Users\Administrator> ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : WIN-CRLO5NIQB72
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : local

Ethernet adapter Local Area Connection 2:

   Connection-specific DNS Suffix  . : local
   Description . . . . . . . . . . . : Red Hat VirtIO Ethernet Adapter
   Physical Address. . . . . . . . . : 52-54-00-DD-DF-3E
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:db8:1600:80bf:5054:ff:fedd:df3e(Preferred)
   Link-local IPv6 Address . . . . . : fe80::5054:ff:fedd:df3e%13(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.12.146(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Monday, July 09, 2012 1:59:42 PM
   Lease Expires . . . . . . . . . . : Tuesday, July 10, 2012 1:59:42 PM
   Default Gateway . . . . . . . . . : fe80::6e62:6dff:fed1:dfad%13
                                       192.168.12.1
   DHCP Server . . . . . . . . . . . : 192.168.12.1
   DNS Servers . . . . . . . . . . . : 2001:4860:4860::8888
                                       2001:4860:4860::8844
                                       192.168.12.1
   NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.local:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : local
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft Teredo Tunneling Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:10d1:317d:3f57:f36d(Preferred)
   Link-local IPv6 Address . . . . . : fe80::10d1:317d:3f57:f36d%12(Preferred)
   Default Gateway . . . . . . . . . :
   NetBIOS over Tcpip. . . . . . . . : Disabled

PS C:\Users\Administrator> netsh interface ipv6 show route

Publish  Type      Met  Prefix                    Idx  Gateway/Interface Name
-------  --------  ---  ------------------------  ---  ------------------------
No       Manual    256  ::/0                       13  fe80::6e62:6dff:fed1:dfad
No       Manual    256  ::1/128                     1  Loopback Pseudo-Interface 1
No       Manual    8    2001::/32                  12  Teredo Tunneling Pseudo-Interface
No       Manual    256  2001:0:4137:9e76:10d1:317d:3f57:f36d/128   12  Teredo Tunneling Pseudo-Interface
No       Manual    8    2001:db8:1600:80bf::/64   13  Local Area Connection 2
No       Manual    256  2001:db8:1600:80bf:5054:ff:fedd:df3e/128   13  Local Area Connection 2
No       Manual    256  fe80::/64                  13  Local Area Connection 2
No       Manual    256  fe80::/64                  12  Teredo Tunneling Pseudo-Interface
No       Manual    256  fe80::5efe:192.168.12.146/128   11  isatap.local
No       Manual    256  fe80::10d1:317d:3f57:f36d/128   12  Teredo Tunneling Pseudo-Interface
No       Manual    256  fe80::5054:ff:fedd:df3e/128   13  Local Area Connection 2
No       Manual    256  ff00::/8                    1  Loopback Pseudo-Interface 1
No       Manual    256  ff00::/8                   13  Local Area Connection 2
No       Manual    256  ff00::/8                   12  Teredo Tunneling Pseudo-Interface

PS C:\Users\Administrator> netsh interface ipv6 show prefixpolicies
Querying active state...

Precedence  Label  Prefix
----------  -----  --------------------------------
        50      0  ::1/128
        40      1  ::/0
        30      2  2002::/16
        20      3  ::/96
        10      4  ::ffff:0:0/96
         5      5  2001::/32

到目前为止，我在 VM 中尝试过：

netsh interface ipv6 set global randomizeidentifiers=disabled

没变。

禁用 Teredo 适配器：无变化。它以某种方式重新启用。

使用Microsoft Fix-It 优先选择 IPv6 而不是 IPv4：无变化。

到目前为止，我已经在主机上尝试过：

检查 IPv6 转发 sysctl：

net.ipv6.conf.all.forwarding = 1
net.ipv6.conf.br0.forwarding = 1
net.ipv6.conf.default.forwarding = 1
net.ipv6.conf.em1.forwarding = 1
net.ipv6.conf.lo.forwarding = 1
net.ipv6.conf.sit0.forwarding = 1
net.ipv6.conf.sixxs.forwarding = 1
net.ipv6.conf.virbr0.forwarding = 1
net.ipv6.conf.virbr0-nic.forwarding = 1
net.ipv6.conf.vnet0.forwarding = 1
net.ipv6.conf.vnet1.forwarding = 1
net.ipv6.conf.vnet2.forwarding = 1

重新启动 radvd：没有变化。

linux kvm-virtualization ipv6 windows-server-2008-r2 radvd