DNS解析问题

Question

我对DNS解析有问题。

路由似乎是有效的，因为我可以平其他服务器和traceroute也工作。

但是使用dig，我得到'a.root-servers.net未找到错误‘的a地址。

我在开学第15.4节。

dig +trace google.de @1.1.1.1

; <<>> DiG 9.16.20 <<>> +trace google.de @1.1.1.1
;; global options: +cmd
.                       515724  IN      NS      a.root-servers.net.
.                       515724  IN      NS      b.root-servers.net.
.                       515724  IN      NS      c.root-servers.net.
.                       515724  IN      NS      d.root-servers.net.
.                       515724  IN      NS      e.root-servers.net.
.                       515724  IN      NS      f.root-servers.net.
.                       515724  IN      NS      g.root-servers.net.
.                       515724  IN      NS      h.root-servers.net.
.                       515724  IN      NS      i.root-servers.net.
.                       515724  IN      NS      j.root-servers.net.
.                       515724  IN      NS      k.root-servers.net.
.                       515724  IN      NS      l.root-servers.net.
.                       515724  IN      NS      m.root-servers.net.
.                       515724  IN      RRSIG   NS 8 0 518400 20230209050000 20230127040000 951 . PHk0oAh7B64P4athdNaFRLc2Q/IPUaMhDOdxt98tIfOy7AN4BvWteUMg e1lmRQrHW1V6hPAGoKxNm72DV03Dvg25qZyFC8i2pm5ynEOXHUaGNDVQ +pTLw7xFB9l53WmkEXkjBXa4Zym7BankEClAWJOguovlO3jkFHcdVc6J OAT/jNzQ6RCorSSi027oQ+tc2zfc64IFCqg3z43VQx6eFtW+FtzUAvGT lmpbaOiKiZwEOb7Q9ltpqJc8c62uJWr3l2AU0f6ya4bqEU7ELVw5WA90 A6pC9/L2VQL0h83dnzRlRVTR8wwL2dO50sAOyuuItmgJxj/D2oHJi/A+ qnGIrw==
couldn't get address for 'a.root-servers.net': not found
couldn't get address for 'b.root-servers.net': not found
couldn't get address for 'c.root-servers.net': not found
couldn't get address for 'd.root-servers.net': not found
couldn't get address for 'e.root-servers.net': not found
couldn't get address for 'f.root-servers.net': not found
couldn't get address for 'g.root-servers.net': not found
couldn't get address for 'h.root-servers.net': not found
couldn't get address for 'i.root-servers.net': not found
couldn't get address for 'j.root-servers.net': not found
couldn't get address for 'k.root-servers.net': not found
couldn't get address for 'l.root-servers.net': not found
couldn't get address for 'm.root-servers.net': not found
dig: couldn't get address for 'a.root-servers.net': no more

编辑:当前/etc/resolv.conf：

### /etc/resolv.conf is a symlink to /var/run/netconfig/resolv.conf
### autogenerated by netconfig!
#
# Before you change this file manually, consider to define the
# static DNS configuration using the following variables in the
# /etc/sysconfig/network/config file:
#     NETCONFIG_DNS_STATIC_SEARCHLIST
#     NETCONFIG_DNS_STATIC_SERVERS
#     NETCONFIG_DNS_FORWARDER
# or disable DNS configuration updates via netconfig by setting:
#     NETCONFIG_DNS_POLICY=''
#
# See also the netconfig(8) manual page and other documentation.
#
### Call "netconfig update -f" to force adjusting of /etc/resolv.conf.

Answer 1

如果已经安装了命名/绑定，那么这些根IP地址应该是命名/绑定安装的一部分( Debian/Ubuntu中的/etc/bind 9/db.root和Red分支中的/var/named/named.root )。您可能有一个过时的文件，在这种情况下，您可以在https://www.internic.net/domain/named.root获得最新的文件。

如果您没有命名/绑定安装，那么解析主机名到IP地址的DNS服务器应该是解决这些问题的服务器。