由于某种原因，参数tftpboot中不能使用冒号：filename
group {
filename "node7:linux/pxelinux.0";
host machine_7a {
hardware ethernet 02:01:02:02:01:11;
fixed-address 192.168.10.8;
}
host machine_7b {
hardware ethernet 02:01:02:02:01:12;
fixed-address 192.168.10.9;
}
}
如果我将冒号更改为破折号-，则远程计算机可以正常启动 tftpboot。你知道为什么参数中的冒号filename不起作用吗？
更新:
/var/log/message当我设置为时filename的输出"node7-linux/pxelinux.0"
Jan 22 22:52:48 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:11 via br0
Jan 22 22:52:48 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 22:52:49 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:11 via br0
Jan 22 22:52:49 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 22:52:51 linux-yp1y dhcpd: DHCPREQUEST for 192.168.10.7 (192.168.10.1) from 02:01:02:02:01:11 via br0
Jan 22 22:52:51 linux-yp1y dhcpd: DHCPACK on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 22:52:51 linux-yp1y atftpd[12967]: Serving node7-linux/pxelinux.0 to 192.168.10.7:1024
Jan 22 22:52:51 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:11 via br0
Jan 22 22:52:51 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 22:52:52 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:11 via br0
Jan 22 22:52:52 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 22:52:54 linux-yp1y dhcpd: DHCPREQUEST for 192.168.10.7 (192.168.10.1) from 02:01:02:02:01:11 via br0
Jan 22 22:52:54 linux-yp1y dhcpd: DHCPACK on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 22:52:54 linux-yp1y atftpd[12967]: Serving node7-linux/pxelinux.cfg/default to 192.168.10.7:1024
Jan 22 22:52:54 linux-yp1y atftpd[12967]: Serving node7-linux/vmlinuz to 192.168.10.7:1025
Jan 22 22:52:55 linux-yp1y atftpd[12967]: Serving node7-linux/initrd to 192.168.10.7:1026
Jan 22 22:53:14 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:11 via br0
Jan 22 22:53:14 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 22:53:14 linux-yp1y dhcpd: DHCPREQUEST for 192.168.10.7 (192.168.10.1) from 02:01:02:02:01:11 via br0
Jan 22 22:53:14 linux-yp1y dhcpd: DHCPACK on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 22:53:15 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:12 via br0
Jan 22 22:53:15 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.8 to 02:01:02:02:01:12 via br0
Jan 22 22:53:15 linux-yp1y dhcpd: DHCPREQUEST for 192.168.10.8 (192.168.10.1) from 02:01:02:02:01:12 via br0
Jan 22 22:53:15 linux-yp1y dhcpd: DHCPACK on 192.168.10.8 to 02:01:02:02:01:12 via br0
/var/log/message当我设置为时filename的输出"node7:linux/pxelinux.0"：
Jan 22 23:16:57 linux-yp1y kernel: [343021.700191] br0: port 6(vnet6) entering forwarding state
Jan 22 23:16:57 linux-yp1y kernel: [343021.700296] device vnet6 left promiscuous mode
Jan 22 23:16:57 linux-yp1y kernel: [343021.700302] br0: port 6(vnet6) entering disabled state
Jan 22 23:16:57 linux-yp1y kernel: [343021.721423] br0: port 7(vnet7) entering forwarding state
Jan 22 23:16:57 linux-yp1y kernel: [343021.721467] device vnet7 left promiscuous mode
Jan 22 23:16:57 linux-yp1y kernel: [343021.721470] br0: port 7(vnet7) entering disabled state
Jan 22 23:16:58 linux-yp1y kernel: [343021.742969] br2: port 4(vnet8) entering forwarding state
Jan 22 23:16:58 linux-yp1y kernel: [343021.743040] device vnet8 left promiscuous mode
Jan 22 23:16:58 linux-yp1y kernel: [343021.743042] br2: port 4(vnet8) entering disabled state
Jan 22 23:16:58 linux-yp1y ifdown: vnet6
Jan 22 23:16:58 linux-yp1y ifdown: Interface not available and no configuration found.
Jan 22 23:16:58 linux-yp1y ifdown: vnet7
Jan 22 23:16:58 linux-yp1y ifdown: Interface not available and no configuration found.
Jan 22 23:16:58 linux-yp1y ifdown: vnet8
Jan 22 23:16:58 linux-yp1y ifdown: Interface not available and no configuration found.
Jan 22 23:17:01 linux-yp1y kernel: [343025.377050] device vnet6 entered promiscuous mode
Jan 22 23:17:01 linux-yp1y kernel: [343025.393810] br0: port 6(vnet6) entering forwarding state
Jan 22 23:17:01 linux-yp1y kernel: [343025.393814] br0: port 6(vnet6) entering forwarding state
Jan 22 23:17:01 linux-yp1y kernel: [343025.449562] device vnet7 entered promiscuous mode
Jan 22 23:17:01 linux-yp1y kernel: [343025.466276] br0: port 7(vnet7) entering forwarding state
Jan 22 23:17:01 linux-yp1y kernel: [343025.466280] br0: port 7(vnet7) entering forwarding state
Jan 22 23:17:01 linux-yp1y kernel: [343025.557549] device vnet8 entered promiscuous mode
Jan 22 23:17:01 linux-yp1y kernel: [343025.574265] br2: port 4(vnet8) entering forwarding state
Jan 22 23:17:01 linux-yp1y kernel: [343025.574270] br2: port 4(vnet8) entering forwarding state
Jan 22 23:17:03 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:11 via br0
Jan 22 23:17:03 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 23:17:04 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:11 via br0
Jan 22 23:17:04 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 23:17:05 linux-yp1y kernel: [343029.580829] br2: port 4(vnet8) entering forwarding state
Jan 22 23:17:06 linux-yp1y dhcpd: DHCPREQUEST for 192.168.10.7 (192.168.10.1) from 02:01:02:02:01:11 via br0
Jan 22 23:17:06 linux-yp1y dhcpd: DHCPACK on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 23:17:06 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:12 via br0
Jan 22 23:17:06 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.8 to 02:01:02:02:01:12 via br0
Jan 22 23:17:07 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:12 via br0
Jan 22 23:17:07 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.8 to 02:01:02:02:01:12 via br0
Jan 22 23:17:09 linux-yp1y dhcpd: DHCPREQUEST for 192.168.10.8 (192.168.10.1) from 02:01:02:02:01:12 via br0
Jan 22 23:17:09 linux-yp1y dhcpd: DHCPACK on 192.168.10.8 to 02:01:02:02:01:12 via br0
Jan 22 23:17:12 linux-yp1y kernel: [343035.804008] vnet8: no IPv6 routers present
Jan 22 23:17:12 linux-yp1y kernel: [343036.148005] vnet7: no IPv6 routers present
Jan 22 23:17:12 linux-yp1y kernel: [343036.397004] vnet6: no IPv6 routers present
Jan 22 23:17:24 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:11 via br0
Jan 22 23:17:24 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 23:17:25 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:11 via br0
Jan 22 23:17:25 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 23:17:27 linux-yp1y dhcpd: DHCPREQUEST for 192.168.10.7 (192.168.10.1) from 02:01:02:02:01:11 via br0
Jan 22 23:17:27 linux-yp1y dhcpd: DHCPACK on 192.168.10.7 to 02:01:02:02:01:11 via br0
Jan 22 23:17:27 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:12 via br0
Jan 22 23:17:27 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.8 to 02:01:02:02:01:12 via br0
Jan 22 23:17:28 linux-yp1y dhcpd: DHCPDISCOVER from 02:01:02:02:01:12 via br0
Jan 22 23:17:28 linux-yp1y dhcpd: DHCPOFFER on 192.168.10.8 to 02:01:02:02:01:12 via br0
Jan 22 23:17:30 linux-yp1y dhcpd: DHCPREQUEST for 192.168.10.8 (192.168.10.1) from 02:01:02:02:01:12 via br0
Jan 22 23:17:30 linux-yp1y dhcpd: DHCPACK on 192.168.10.8 to 02:01:02:02:01:12 via br0
答案1
PXELINUX 支持以下特殊路径名约定：
：：文件名 抑制通用文件名前缀，即将字符串“filename”不加修改地传递到服务器。
IP 地址::文件名
(e.g. node7::filename)
抑制通用文件名前缀，并将请求发送到备用 TFTP 服务器。可以使用 DNS 名称来代替 IP 地址。如果它包含点，则认为它是完全合格的；否则将添加 DHCP 服务器（选项 15）报告的本地域。
选择双冒号（“::”）是因为它不太可能与操作系统的使用发生冲突。
归因：这里