我通过以下方式在本地网络上配置了 IPv6 radvd
:它通告一个可路由的 IPv6 块,所有计算机都会自动配置该块。
我通过 dhcpd 将 IPv4 分配给 NAT 块并更新命名。
我的问题是,当我为主机的 IPv6 地址(不会更改)设置 AAAA 记录时,named 将开始拒绝来自 dhcpd 的 A 记录的名称更新。
命名报告以下错误:
'name not in use' prerequisite not satisfied (YXDOMAIN)
dhcpd 会报如下错误:
Has an A record but no DHCID, not mine
我怎样才能说服 dhcpdAAAA
在执行指定更新时忽略该记录。
答案1
将以下行添加到/etc/dhcp/dhcpd.conf
:
update-conflict-detection false;
答案2
我在这里找到了答案http://www.gelato.unsw.edu.au/IA64wiki/IPv6DDNS
本质上 dhcpd 有一种为事件添加挂钩的方法,因此在 IPv4 注册时调用一个脚本,该脚本将生成基于标准 MAC 的 IPv6 地址并进行注册。
更新: (我使用的是 ICH DHCP 4.1)
当使用“on commit”钩子时,它会删除现有的动态更新,因此您需要将其复制到“on commit”部分,我的现在看起来像这样:
on commit {
if (not static) {
# Setup IPv6 Address
set new-ddns-fwd-name = pick-first-value(ddns-hostname, host-decl-name);
if (exists host-name and option host-name ~~ "^[a-z0-9.-]+$") {
set new-ddns-fwd-name = option host-name;
} elsif (exists dhcp-client-identifier and option dhcp-client-identifier ~~ "^[a-z0-9.-]+$") {
set new-ddns-fwd-name = substring(option dhcp-client-identifier, 1, 50);
} elsif (new-ddns-fwd-name = "") {
set new-ddns-fwd-name = binary-to-ascii (16, 8, "-",
substring (hardware, 1, 6));
}
set ddns-fwd-name = new-ddns-fwd-name;
execute ("/opt/bin/ddns-ipv6", ddns-fwd-name, ucase(
binary-to-ascii(16, 8, ":", substring(hardware, 1, 6))),
binary-to-ascii(10, 8, ".", leased-address));
unset new-ddns-fwd-name;
switch (ns-update (not exists (IN, A, ddns-fwd-name, null),
add (IN, A, ddns-fwd-name, leased-address,
lease-time / 2))) {
default:
unset ddns-fwd-name;
break;
case NOERROR:
set ddns-rev-name =
concat (binary-to-ascii (10, 8, ".", reverse (1, leased-address)), ".",
pick (config-option server.ddns-rev-domainname,
"in-addr.arpa."));
switch (ns-update (delete (IN, PTR, ddns-rev-name, null),
add (IN, PTR, ddns-rev-name, ddns-fwd-name, lease-time / 2)))
{
default:
unset ddns-rev-name;
on release or expiry {
execute ("/opt/bin/ddns-ipv6", "-d", pick-first-value(ddns-hostname, host-decl-name));
switch (ns-update (delete (IN, A, ddns-fwd-name,
leased-address))) {
case NOERROR:
unset ddns-fwd-name;
break;
}
on release or expiry;
}
break;
case NOERROR:
on release or expiry {
execute ("/opt/bin/ddns-ipv6", "-d", pick-first-value(ddns-hostname, host-decl-name));
switch (ns-update (delete (IN, PTR, ddns-rev-name, null))) {
case NOERROR:
unset ddns-rev-name;
break;
}
switch (ns-update (delete (IN, A, ddns-fwd-name,
leased-address))) {
case NOERROR:
unset ddns-fwd-name;
break;
}
on release or expiry;
}
}
break;
}
}
}