我让BIND9和ISC-DHCP在没有配置更改的情况下运行了几年。
新机器会分配一个IP，并向DNS添加一个转发映射。
但是，有一台机器出现了此错误。
Unable to add forward map from Tesla_Model_3.argylecourt.lan to 192.168.1.69: REFUSED
一些机器的日志如下(倒数第二个块有REFUSED错误(：
Nov 29 07:21:34 rpi32 dhcpd[27581]: DHCPOFFER on 192.168.1.66 to e4:5e:37:a1:02:57 (A2801191251) via eth0
Nov 29 07:21:34 rpi32 dhcpd[27581]: DHCPREQUEST for 192.168.1.66 (192.168.1.8) from e4:5e:37:a1:02:57 (A2801191251) via eth0
Nov 29 07:21:34 rpi32 dhcpd[27581]: DHCPACK on 192.168.1.66 to e4:5e:37:a1:02:57 (A2801191251) via eth0
Nov 29 07:21:34 rpi32 dhcpd[27581]: Added reverse map from 66.1.168.192.in-addr.arpa to A2801191251.int.abc.net.au
Nov 29 07:21:38 rpi32 dhcpd[27581]: reuse_lease: lease age 4 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.1.66
Nov 29 07:21:38 rpi32 dhcpd[27581]: DHCPREQUEST for 192.168.1.66 from e4:5e:37:a1:02:57 (A2801191251) via eth0
Nov 29 07:21:38 rpi32 dhcpd[27581]: DHCPACK on 192.168.1.66 to e4:5e:37:a1:02:57 (A2801191251) via eth0
Nov 29 07:28:19 rpi32 dhcpd[27581]: DHCPREQUEST for 192.168.1.94 (192.168.1.8) from 5f:a9:50:16:04:75 (WIZnet160475) via eth0
Nov 29 07:28:19 rpi32 dhcpd[27581]: Wrote 0 deleted host decls to leases file.
Nov 29 07:28:19 rpi32 dhcpd[27581]: Wrote 0 new dynamic host decls to leases file.
Nov 29 07:28:19 rpi32 dhcpd[27581]: Wrote 50 leases to leases file.
Nov 29 07:28:19 rpi32 dhcpd[27581]: DHCPACK on 192.168.1.94 to 5f:a9:50:16:04:75 (WIZnet160475) via eth0
Nov 29 07:58:09 rpi32 dhcpd[27581]: DHCPREQUEST for 192.168.1.56 (192.168.1.8) from 4d:61:78:47:39:38 (WIZnet473938) via eth0
Nov 29 07:58:09 rpi32 dhcpd[27581]: DHCPACK on 192.168.1.56 to 4d:61:78:47:39:38 (WIZnet473938) via eth0
Nov 29 08:21:17 rpi32 dhcpd[27581]: DHCPREQUEST for 192.168.1.61 (192.168.1.8) from 4d:61:78:47:39:37 (WIZnet473937) via eth0
Nov 29 08:21:17 rpi32 dhcpd[27581]: DHCPACK on 192.168.1.61 to 4d:61:78:47:39:37 (WIZnet473937) via eth0
Nov 29 08:28:49 rpi32 dhcpd[27581]: DHCPDISCOVER from 68:d7:9a:02:9e:ae (UAP-AC-Mesh1) via eth0
Nov 29 08:28:50 rpi32 dhcpd[27581]: DHCPOFFER on 192.168.1.79 to 68:d7:9a:02:9e:ae (UAP-AC-Mesh1) via eth0
Nov 29 08:28:50 rpi32 dhcpd[27581]: DHCPREQUEST for 192.168.1.79 (192.168.1.8) from 68:d7:9a:02:9e:ae (UAP-AC-Mesh1) via eth0
Nov 29 08:28:50 rpi32 dhcpd[27581]: DHCPACK on 192.168.1.79 to 68:d7:9a:02:9e:ae (UAP-AC-Mesh1) via eth0
Nov 29 09:16:28 rpi32 dhcpd[27581]: DHCPREQUEST for 192.168.1.69 from 4c:fc:aa:1f:9d:13 via eth0
Nov 29 09:16:28 rpi32 dhcpd[27581]: DHCPACK on 192.168.1.69 to 4c:fc:aa:1f:9d:13 (Tesla_Model_3) via eth0
Nov 29 09:16:28 rpi32 dhcpd[27581]: Unable to add forward map from Tesla_Model_3.argylecourt.lan to 192.168.1.69: REFUSED
Nov 29 09:40:24 rpi32 dhcpd[27581]: DHCPREQUEST for 192.168.1.59 (192.168.1.8) from 5f:34:33:33:54:58 (WIZnet335458) via eth0
Nov 29 09:40:24 rpi32 dhcpd[27581]: DHCPACK on 192.168.1.59 to 5f:34:33:33:54:58 (WIZnet335458) via eth0
我不知道如何解决这个问题。我确实读了一些帖子，但这些帖子指向resolv.conf和DNS配置文件，我觉得这些文件不适用。
为什么只有这台机器？而不是其他人？
不过，我很乐意提供任何有助于解决此问题的配置。
运行BIND/DHCP:的机器
Static hostname: rpi32
Operating System: Raspbian GNU/Linux 10 (buster)
Kernel: Linux 4.14.34-v7+
Architecture: arm
● bind9.service - BIND Domain Name Server
Loaded: loaded (/lib/systemd/system/bind9.service; enabled; vendor preset: enabled)
Active: active (running) since Sat 2021-06-12 16:18:11 AEST; 5 months 17 days ago
Docs: man:named(8)
Main PID: 10866 (named)
CGroup: /system.slice/bind9.service
└─10866 /usr/sbin/named -4 -u bind
Nov 29 07:21:34 rpi32 named[10866]: zone 1.168.192.in-addr.arpa/IN: sending notifies (serial 2019080932)
Nov 29 09:16:28 rpi32 named[10866]: client @0x712325b8 127.0.0.1#48853/key dhcp_updater: signer "dhcp_updater" approved
Nov 29 09:16:28 rpi32 named[10866]: zone argylecourt.lan/IN: Tesla_Model_3.argylecourt.lan/A: bad owner name (check-names)
Nov 29 10:47:54 rpi32 named[10866]: client @0x7016cba8 127.0.0.1#43559/key dhcp_updater: updating zone 'argylecourt.lan/IN': update unsuccessful: lantronix.argylecourt.lan: 'name n$
Nov 29 10:47:54 rpi32 named[10866]: client @0x70002020 127.0.0.1#54555/key dhcp_updater: signer "dhcp_updater" approved
Nov 29 10:47:54 rpi32 named[10866]: client @0x70002020 127.0.0.1#54555/key dhcp_updater: updating zone 'argylecourt.lan/IN': deleting rrset at 'lantronix.argylecourt.lan' A
Nov 29 10:47:54 rpi32 named[10866]: client @0x70002020 127.0.0.1#54555/key dhcp_updater: updating zone 'argylecourt.lan/IN': adding an RR at 'lantronix.argylecourt.lan' A 192.168.1$
Nov 29 10:47:54 rpi32 named[10866]: client @0x701f0ff0 127.0.0.1#45643/key dhcp_updater: signer "dhcp_updater" approved
Nov 29 10:47:54 rpi32 named[10866]: client @0x701f0ff0 127.0.0.1#45643/key dhcp_updater: updating zone '1.168.192.in-addr.arpa/IN': deleting rrset at '11.1.168.192.in-addr.arpa' PTR
Nov 29 10:47:54 rpi32 named[10866]: client @0x701f0ff0 127.0.0.1#45643/key dhcp_updater: updating zone '1.168.192.in-addr.arpa/IN': adding an RR at '11.1.168.192.in-addr.arpa' PTR $
● isc-dhcp-server.service - LSB: DHCP server
Loaded: loaded (/etc/init.d/isc-dhcp-server; generated)
Active: active (running) since Sat 2021-07-03 20:59:59 AEST; 4 months 26 days ago
Docs: man:systemd-sysv-generator(8)
CGroup: /system.slice/isc-dhcp-server.service
└─27581 /usr/sbin/dhcpd -4 -q -cf /etc/dhcp/dhcpd.conf eth0
Nov 29 09:16:28 rpi32 dhcpd[27581]: Unable to add forward map from Tesla_Model_3.argylecourt.lan
[edit1]我更新了BIND状态消息。。。并看到(错误的所有者名称(检查名称((：
Nov 29 09:16:28 rpi32 named[10866]: zone argylecourt.lan/IN: Tesla_Model_3.argylecourt.lan/A: bad owner name (check-names)
现在调查一下。。。。但在A记录中似乎不允许使用下划线。
进一步的研究表明：根据RFC 1035，域名中不允许使用下划线字符，它只允许在非_TXT记录中使用字母、数字和连字符。