我想要的是
我的设置有动态数量的 LXC 容器，因此我需要一些动态 ipv6 地址分配。接口 brNC-internet 是一个简单的桥，它映射到基于 LXC 的容器中。
我需要一种方法将 LXC 容器中的 ipv6 地址分配给internet每个接口。手动执行此操作是可行的，如下所示，但这应该使用 dhcpd6（或类似的东西）自动完成。
我很乐意尝试：
- 有状态 DHCP：客户端在一定时间限制（几天、几周）内重新启动时会重新分配相同的地址
- 无状态 DHCP：客户端在有效时间内可以获取任意地址
笔记：我无法将 radvd 与 SLAAC 一起使用，因为我的网络前缀是 /66，而 radvd 至少需要 /64，请参阅这。
笔记：目前我想重点讨论 IPv6。
笔记：我在用着尼克斯Linux而且我可能只是配置了错误的东西，有一个防火墙规则破坏了一些东西或者对 ipv6 或甚至某些 LXC 特定的内部存在一般误解。无论哪种情况，请指出我下一步可以尝试什么。
我的问题
我已经在主机（虚拟机）上设置了 radvd 和 dhcpd6，但是虽然 radvd 能够推送 ipv6 默认网关和前缀，但客户端似乎从未使用客户端的 dhcpcd 与 dhcpd6 服务器通信。
如果我禁用来宾 LXC 实例上的 dhcpcd 客户端，我可以在前缀中分配一个 ipv6 地址并 ping6 到 google works：
[root@10:/]# ip a replace 2a01:4f8:221:3744:4000::4 dev internet
[root@10:/]# ping -6 -I internet 2a00:1450:4001:80b::2003
PING 2a00:1450:4001:80b::2003(2a00:1450:4001:80b::2003) from fe80::10af:ffff:fef4:318a internet: 56 data bytes
From fe80::2044:c6ff:fef3:cd5d%internet icmp_seq=1 Destination unreachable: Beyond scope of source address
64 bytes from 2a00:1450:4001:80b::2003: icmp_seq=2 ttl=55 time=5.36 ms
64 bytes from 2a00:1450:4001:80b::2003: icmp_seq=3 ttl=55 time=5.26 ms
64 bytes from 2a00:1450:4001:80b::2003: icmp_seq=4 ttl=55 time=5.27 ms
我也尝试禁用主机和 LXC 客户端上的防火墙，但没有变化。
来自 lxc 的 dhcpcd
dhcpcd -6 --config /nix/store/7n7ysqf92rlafihs9dm2gzsbh06cw64z-dhcpcd.conf
DUID 00:01:00:01:22:4f:af:36:ee:ae:40:b5:d7:d3
internet: IAID 98:0e:c7:c8
internet: soliciting an IPv6 router
internet: Router Advertisement from fe80::2044:c6ff:fef3:cd5d
forked to background, child pid 1238
虚拟机上的 tcpdump
tcpdump -i brNC-internet ip6
14:36:18.618554 IP6 fe80::dc5d:98ff:fe0e:c7c8 > ff02::2: ICMP6, router solicitation, length 16
14:36:18.618681 IP6 status.nixcloud.io > fe80::dc5d:98ff:fe0e:c7c8: ICMP6, router advertisement, length 112
14:36:20.578582 IP6 status.nixcloud.io > ff02::1: ICMP6, router advertisement, length 112
14:36:24.059514 IP6 status.nixcloud.io > fe80::dc5d:98ff:fe0e:c7c8: ICMP6, neighbor solicitation, who has fe80::dc5d:98ff:fe0e:c7c8, length 32
14:36:24.059598 IP6 fe80::dc5d:98ff:fe0e:c7c8 > status.nixcloud.io: ICMP6, neighbor advertisement, tgt is fe80::dc5d:98ff:fe0e:c7c8, length 24
dhcpd6 登录虚拟机
journalctl -u dhcpd6 -f
-- Logs begin at Tue 2018-02-13 02:31:51 CET. --
Mar 30 14:00:08 status.nixcloud.io dhcpd[17605]: Wrote 0 NA, 0 TA, 0 PD leases to lease file.
Mar 30 14:00:08 status.nixcloud.io dhcpd6[17605]: Bound to *:547
Mar 30 14:00:08 status.nixcloud.io dhcpd[17605]: Bound to *:547
Mar 30 14:00:08 status.nixcloud.io dhcpd[17605]: Listening on Socket/5/brNC-internet/2a01:4f8:221:3744:4000::/66
Mar 30 14:00:08 status.nixcloud.io dhcpd[17605]: Sending on Socket/5/brNC-internet/2a01:4f8:221:3744:4000::/66
Mar 30 14:00:08 status.nixcloud.io dhcpd6[17605]: Listening on Socket/5/brNC-internet/2a01:4f8:221:3744:4000::/66
Mar 30 14:00:08 status.nixcloud.io dhcpd6[17605]: Sending on Socket/5/brNC-internet/2a01:4f8:221:3744:4000::/66
Mar 30 14:00:08 status.nixcloud.io systemd[1]: dhcpd6.service: Can't open PID file /run/dhcpd6/dhcpd.pid (yet?) after start: No such file or directory
Mar 30 14:00:08 status.nixcloud.io dhcpd6[17615]: Server starting service.
Mar 30 14:00:08 status.nixcloud.io systemd[1]: Started DHCPv6 server.
我的设置
主机虚拟机
ip -6 a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 state UNKNOWN qlen 1000
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 2a01:4f8:221:3744::1:26/128 scope global
valid_lft forever preferred_lft forever
inet6 fe80::5054:ff:fefb:d8d0/64 scope link
valid_lft forever preferred_lft forever
3: enp0s2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 fe80::5054:ff:fe08:4db9/64 scope link
valid_lft forever preferred_lft forever
4: brNC-hostonly: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 fe80::5880:6aff:fe77:cd16/64 scope link
valid_lft forever preferred_lft forever
5: brNC-internet: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 2a01:4f8:221:3744:4000::2/128 scope global
valid_lft forever preferred_lft forever
inet6 fc00::261/128 scope global
valid_lft forever preferred_lft forever
inet6 fe80::2044:c6ff:fef3:cd5d/64 scope link
valid_lft forever preferred_lft forever
121: vethVIEF2K@if120: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 fe80::fc55:8fff:fe5d:a50a/64 scope link
valid_lft forever preferred_lft forever
123: vethPIKVFW@if122: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 fe80::fc4f:adff:fe61:180b/64 scope link
valid_lft forever preferred_lft forever
133: vethC387B7@if132: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 fe80::fc5c:16ff:fe64:444b/64 scope link
valid_lft forever preferred_lft forever
135: vethE0I0FG@if134: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 fe80::fcbf:d4ff:fe33:a9d0/64 scope link
valid_lft forever preferred_lft forever
ip -6 r
2a01:4f8:221:3744::1:26 dev enp0s3 proto kernel metric 256 pref medium
2a01:4f8:221:3744:4000::2 dev brNC-internet proto kernel metric 256 pref medium
2a01:4f8:221:3744:4000::/66 dev brNC-internet proto kernel metric 256 expires 9700sec pref medium
fc00::26 dev enp0s3 metric 1024 pref medium
fc00::261 dev brNC-internet proto kernel metric 256 pref medium
fe80::/64 dev enp0s3 proto kernel metric 256 pref medium
fe80::/64 dev brNC-hostonly proto kernel metric 256 pref medium
fe80::/64 dev brNC-internet proto kernel metric 256 pref medium
fe80::/64 dev enp0s2 proto kernel metric 256 pref medium
fe80::/64 dev vethVIEF2K proto kernel metric 256 pref medium
fe80::/64 dev vethPIKVFW proto kernel metric 256 pref medium
fe80::/64 dev vethE0I0FG proto kernel metric 256 pref medium
fe80::/64 dev vethC387B7 proto kernel metric 256 pref medium
default via fc00::26 dev enp0s3 metric 1024 pref medium
dhcpd 配置
cat /nix/store/5zvcjwvlj9n7cvrppkw1mxsxwhxwx3cm-dhcpd.conf
default-lease-time 600;
max-lease-time 7200;
authoritative;
ddns-update-style interim;
log-facility local1; # see dhcpd.nix
subnet6 2a01:4f8:221:3744:4000::/66 {
#range6 2a01:4f8:221:3744:4000::/66 temporary;
option dhcp6.name-servers 2a01:4f8:0:1::add:1010, 2a01:4f8:0:1::add:9999, 2a01:4f8:0:1::add:9898;
}
radvd 配置
cat /nix/store/89j6hg4qhnd9nyijf9p2dcr4f5ygjz6r-radvd.conf
interface brNC-internet {
AdvSendAdvert on;
MinRtrAdvInterval 3;
MaxRtrAdvInterval 10;
prefix 2a01:4f8:221:3744:4000::/66 {
AdvOnLink on;
AdvAutonomous off;
};
RDNSS 2a01:4f8:0:1::add:1010 2a01:4f8:0:1::add:9999 2a01:4f8:0:1::add:9898 { };
};
客人 LXC
[root@10:/]# ip -6 a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 state UNKNOWN qlen 1000
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
132: hostonly@if133: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 fe80::484f:50ff:fe0c:fa62/64 scope link
valid_lft forever preferred_lft forever
134: internet@if135: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 2a01:4f8:221:3744:4000::4/128 scope global
valid_lft forever preferred_lft forever
inet6 fe80::10af:ffff:fef4:318a/64 scope link
valid_lft forever preferred_lft forever
[root@10:/]# ip -6 r
2a01:4f8:221:3744:4000::4 dev internet proto kernel metric 256 pref medium
2a01:4f8:221:3744:4000::/66 dev internet proto kernel metric 256 expires 86395sec pref medium
fe80::/64 dev hostonly proto kernel metric 256 pref medium
fe80::/64 dev internet proto kernel metric 256 pref medium
default via fe80::2044:c6ff:fef3:cd5d dev internet proto ra metric 1024 expires 25sec hoplimit 64 pref medium
lxc 配置
lxc.uts.name = 10
# Fixme also support other architectures?
lxc.arch = x86_64
# Not needed, just makes spares a few cpu cycles as LXC doesn't have
# to detect the backend.
#lxc.rootfs.backend = dir
lxc.rootfs.path = /var/lib/lxc/10/rootfs
lxc.init.cmd = /init/container/init
#lxc.rootfs = /var/lib/lxc/10/rootfs
# Ensures correct functionality with user namespaces. Since mknod is not possible stuff like
# /dev/console, /dev/tty, /dev/urandom, etc. need to be bind mounted. Note the order
# of the file inclusion here is important.
lxc.include = /nix/store/3hz7xkd86pzrvr4z53fa079q61qar02x-lxc-2.1.1/share/lxc/config/common.conf
lxc.include = /nix/store/3hz7xkd86pzrvr4z53fa079q61qar02x-lxc-2.1.1/share/lxc/config/userns.conf
## Network
# see also https://wiki.archlinux.org/index.php/Linux_Containers
lxc.net.0.type = veth
lxc.net.0.name = hostonly
#lxc.net.0.ipv4.address = 10.101.0.63 (we assign this using nix, not from lxc)
lxc.net.0.flags = up
lxc.net.0.link = brNC-hostonly
lxc.net.1.type = veth
lxc.net.1.name = internet
lxc.net.1.flags = up
lxc.net.1.link = brNC-internet
# Specifiy {u,g}id mapping.
lxc.idmap = u 0 100000 65536
lxc.idmap = g 0 100000 65536
# FIXME apparmor support
# Nixos does not provide AppArmor support.
#lxc.aa_profile = unconfined
#lxc.aa_allow_incomplete = 1
lxc.apparmor.profile = unconfined
lxc.apparmor.allow_incomplete = 1
# Tweaks for systemd.
lxc.autodev = 1
# Additional mount entries.
lxc.mount.entry = /nix/store nix/store none defaults,bind.ro 0.0
lxc.mount.entry = /nix/var/nix/profiles/nixcloud-container-10 init none defaults,bind.ro 0 0
# Mount entries that lead to a cleaner boot experience.
lxc.mount.entry = /sys/kernel/debug sys/kernel/debug none bind,optional 0 0
lxc.mount.entry = /sys/kernel/security sys/kernel/security none bind,optional 0 0
lxc.mount.entry = /sys/fs/pstore sys/fs/pstore none bind,optional 0 0
lxc.mount.entry = mqueue dev/mqueue mqueue rw,relatime,create=dir,optional 0 0
# LXC autostart
lxc.start.auto = 0
lxc.rootfs.path = dir:/var/lib/lxc/10/rootfs
答案1
好的，我们开始吧：
经过整整三天尝试不同的配置、阅读大约 40 个网页以及极好的运气后，我终于让它工作了：
- 需要一个特殊的 dhcpcd.conf（默认不起作用）
- 需要一个特殊的 dhcpd6.conf（默认的也不起作用）
- 需要一个特殊的 radvd.conf（没有默认值）
- 并且只禁用 nixos 防火墙（当我发现需要做什么时会发布规则修改）->
systemctl stop firewall
nixos 防火墙中缺少的防火墙规则如下：
ip6tables -A INPUT -p tcp -m tcp -m multiport -i brNC-internet -j ACCEPT --dports 546,547
ip6tables -A INPUT -p udp -m udp -m multiport -i brNC-internet -j ACCEPT --dports 546,547
摘要：IPv6 文档、IPv6 默认配置（在 ubuntu 服务器中）和最佳实践指南的状态令人遗憾，并再次表明了为什么 IPv6 没有在更多站点上部署，我的意思是服务器（这里甚至没有谈论笔记本电脑或移动设备等客户端配置）。
我当前的设置通过部署 ipv6 网关radvd并并行分配 ipv6 地址，dhcpd6因为在我的设置中无法使用 SLAAC，因为我的前缀是 /66，需要是 (/64、/63，...，小于 64 的数字)。请参阅http://www.teaparty.net/technotes/home-ipv6.html（radvd 部分）了解更多详细信息。
关于 dhclient 的说明：哦，与 dhcpcd 不同，它需要非常特殊的配置才能dhclient在我的 ubuntu 测试机上使用，我获得了租约而不需要对 dhclient 配置进行任何修改。与实现相比，这是一个巨大的优势dhcpcd。
文档
文档和博客说明：非常感谢 sixxs.net 和这些网页的作者。没有你们的出色工作，我就不可能做到这一点！
- https://www.sixxs.net/wiki/Configuring_ISC_DHCPv6_Server
- https://blog.cepharum.de/en/post/lxc-host-featuring-ipv6-connectivity.html
- http://sophiedogg.com/radvd-and-dhcpd6-server-configuration-for-dynamic-dns/
- https://k3a.me/setting-up-ipv6-using-a-dhcp-client/
radvd 配置
interface brNC-internet {
AdvSendAdvert on;
MinRtrAdvInterval 3;
MaxRtrAdvInterval 10;
#prefix 2a01:4f8:221:3744:4000::/66 {
# AdvOnLink on;
# AdvAutonomous off;
#};
#RDNSS 2a01:4f8:0:1::add:1010 2a01:4f8:0:1::add:9999 2a01:4f8:0:1::add:9898 { };
dhcpcd 输出
[root@11:~]# dhcpcd --config /root/dhcpcd6.conf
DUID 00:01:00:01:22:52:a7:e3:0a:79:bb:c7:9c:d6
internet: IAID fc:bf:59:37
internet: IAID 00:00:00:01
internet: confirming prior DHCPv6 lease
internet: REPLY6 received from fe80::e4d2:fbff:feab:81dd
internet: adding address 2a01:4f8:221:3744:4000::300/128
internet: renew in 40000, rebind in 64000, expire in 86400 seconds
forked to background, child pid 12363
dhcpcd.conf（客户端配置）
# Inform the DHCP server of our hostname for DDNS.
hostname
# Rapid commit support.
# Safe to enable by default because it requires the equivalent option set
# on the server to actually work.
option rapid_commit
# options to request from the DHCP
option domain_name_servers, interface_mtu
# A ServerID is required by RFC2131.
require dhcp_server_identifier
# only configure ipv6
ipv6only
# disable routing solicitation
noipv6rs
# don't touch these interfaces at all
denyinterfaces hostonly
interface internet
# enable routing solicitation get the default IPv6 route
#ipv6rs
# request a normal (IA_NA) IPv6 address with IAID 1
ia_na 1
dhcpd6 配置
services.dhcpd6 = {
enable = true;
interfaces = [ "brNC-internet" ];
extraConfig = ''
ddns-update-style interim;
ddns-updates on;
ddns-domainname "your.domain.com";
ddns-rev-domainname "ip6.arpa";
allow client-updates;
update-conflict-detection false;
update-optimization false;
authoritative;
option domain-name-servers dns.your.domain.com;
default-lease-time 86400;
preferred-lifetime 80000;
allow leasequery;
option dhcp6.name-servers 2001:0db8:edfa:1234::1;
option dhcp6.domain-search "your.domain.com","domain.com";
#include "/etc/rndc.key";
option dhcp6.preference 255;
subnet6 2a01:4f8:221:3744:4000::/66 {
#range6 2a01:4f8:221:3744:4000::/66 temporary;
range6 2a01:4f8:221:3744:4000::129 2a01:4f8:221:3744:4000::300;
option dhcp6.name-servers 2a01:4f8:0:1::add:1010, 2a01:4f8:0:1::add:9999, 2a01:4f8:0:1::add:9898;
# option dhcp6.gateway 2001:db8:2:3::1;
}
'';
};
tcpdump 输出
tcpdump -i brNC-internet ip6
13:47:01.854794 IP6 fe80::d4e8:fcff:febf:5937 > status.nixcloud.io: ICMP6, neighbor solicitation, who has status.nixcloud.io, length 32
13:47:01.854827 IP6 status.nixcloud.io > fe80::d4e8:fcff:febf:5937: ICMP6, neighbor advertisement, tgt is status.nixcloud.io, length 24
13:47:05.649860 IP6 status.nixcloud.io > ff02::1: ICMP6, router advertisement, length 24
13:47:06.772849 IP6 fe80::d4e8:fcff:febf:5937.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit
13:47:06.773021 IP6 status.nixcloud.io.dhcpv6-server > fe80::d4e8:fcff:febf:5937.dhcpv6-client: dhcp6 advertise
13:47:06.773344 IP6 fe80::d4e8:fcff:febf:5937.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 request
13:47:06.774004 IP6 status.nixcloud.io.dhcpv6-server > fe80::d4e8:fcff:febf:5937.dhcpv6-client: dhcp6 reply
13:47:06.777782 IP6 fe80::d4e8:fcff:febf:5937 > ff02::16: HBH ICMP6, multicast listener report v2, 2 group record(s), length 48
13:47:07.071788 IP6 fe80::d4e8:fcff:febf:5937 > ff02::16: HBH ICMP6, multicast listener report v2, 2 group record(s), length 48
13:47:07.423792 IP6 :: > ff02::1:ff00:300: ICMP6, neighbor solicitation, who has 2a01:4f8:221:3744:4000::300, length 32
dhcpd6 日志
Apr 01 13:35:41 status.nixcloud.io dhcpd6[9225]: Copyright 2004-2016 Internet Systems Consortium.
Apr 01 13:35:41 status.nixcloud.io dhcpd6[9225]: All rights reserved.
Apr 01 13:35:41 status.nixcloud.io dhcpd6[9225]: For info, please visit https://www.isc.org/software/dhcp/
Apr 01 13:35:41 status.nixcloud.io dhcpd6[9225]: Wrote 0 NA, 0 TA, 0 PD leases to lease file.
Apr 01 13:35:41 status.nixcloud.io dhcpd[9225]: Wrote 0 NA, 0 TA, 0 PD leases to lease file.
Apr 01 13:35:42 status.nixcloud.io dhcpd6[9225]: Bound to *:547
Apr 01 13:35:42 status.nixcloud.io dhcpd[9225]: Bound to *:547
Apr 01 13:35:42 status.nixcloud.io dhcpd[9225]: Listening on Socket/5/brNC-internet/2a01:4f8:221:3744:4000::/66
Apr 01 13:35:42 status.nixcloud.io dhcpd[9225]: Sending on Socket/5/brNC-internet/2a01:4f8:221:3744:4000::/66
Apr 01 13:35:42 status.nixcloud.io dhcpd6[9225]: Listening on Socket/5/brNC-internet/2a01:4f8:221:3744:4000::/66
Apr 01 13:35:42 status.nixcloud.io dhcpd6[9225]: Sending on Socket/5/brNC-internet/2a01:4f8:221:3744:4000::/66
Apr 01 13:35:42 status.nixcloud.io systemd[1]: Started DHCPv6 server.
Apr 01 13:35:42 status.nixcloud.io dhcpd6[9227]: Server starting service.
Apr 01 13:44:47 status.nixcloud.io dhcpd6[9227]: Solicit message from fe80::d4e8:fcff:febf:5937 port 546, transaction ID 0x693A9D00
Apr 01 13:44:47 status.nixcloud.io dhcpd6[9227]: Picking pool address 2a01:4f8:221:3744:4000::300
Apr 01 13:44:47 status.nixcloud.io dhcpd6[9227]: Advertise NA: address 2a01:4f8:221:3744:4000::300 to client with duid 00:01:00:01:22:52:a7:e3:0a:79:bb:c7:9c:d6 iaid = 1 valid for 86400 seconds
Apr 01 13:44:47 status.nixcloud.io dhcpd6[9227]: Sending Advertise to fe80::d4e8:fcff:febf:5937 port 546
Apr 01 13:44:47 status.nixcloud.io dhcpd6[9227]: Request message from fe80::d4e8:fcff:febf:5937 port 546, transaction ID 0x8694C500
Apr 01 13:44:47 status.nixcloud.io dhcpd6[9227]: Reply NA: address 2a01:4f8:221:3744:4000::300 to client with duid 00:01:00:01:22:52:a7:e3:0a:79:bb:c7:9c:d6 iaid = 1 valid for 86400 seconds
Apr 01 13:44:47 status.nixcloud.io dhcpd6[9227]: Sending Reply to fe80::d4e8:fcff:febf:5937 port 546
Apr 01 13:45:38 status.nixcloud.io dhcpd6[9227]: Release message from fe80::d4e8:fcff:febf:5937 port 546, transaction ID 0x176D6200
Apr 01 13:45:38 status.nixcloud.io dhcpd6[9227]: Client 00:01:00:01:22:52:a7:e3:0a:79:bb:c7:9c:d6 releases address 2a01:4f8:221:3744:4000::300
Apr 01 13:45:38 status.nixcloud.io dhcpd6[9227]: Sending Reply to fe80::d4e8:fcff:febf:5937 port 546
Apr 01 13:45:44 status.nixcloud.io dhcpd6[9227]: Solicit message from fe80::d4e8:fcff:febf:5937 port 546, transaction ID 0x9D658700
Apr 01 13:45:44 status.nixcloud.io dhcpd6[9227]: Advertise NA: address 2a01:4f8:221:3744:4000::300 to client with duid 00:01:00:01:22:52:a7:e3:0a:79:bb:c7:9c:d6 iaid = 1 valid for 86400 seconds
Apr 01 13:45:44 status.nixcloud.io dhcpd6[9227]: Sending Advertise to fe80::d4e8:fcff:febf:5937 port 546
Apr 01 13:45:44 status.nixcloud.io dhcpd6[9227]: Request message from fe80::d4e8:fcff:febf:5937 port 546, transaction ID 0xBF064200
Apr 01 13:45:44 status.nixcloud.io dhcpd6[9227]: Reply NA: address 2a01:4f8:221:3744:4000::300 to client with duid 00:01:00:01:22:52:a7:e3:0a:79:bb:c7:9c:d6 iaid = 1 valid for 86400 seconds
Apr 01 13:45:44 status.nixcloud.io dhcpd6[9227]: Sending Reply to fe80::d4e8:fcff:febf:5937 port 546
Apr 01 13:46:20 status.nixcloud.io dhcpd6[9227]: Unable to add forward map from 11.your.domain.com to 2a01:4f8:221:3744:4000::300: timed out