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Bug #15032
closed
Kea DHCP sends wrong bootloader file for UEFI
Start date:
Due date:
% Done:
100%
Estimated time:
Plus Target Version:
24.03
Release Notes:
Default
Affected Version:
2.7.1
Affected Architecture:
All
Description
I already posted this problem in the pfSense forum and was asked to report this issue here. Here is the link of the discussion thread:
https://forum.netgate.com/topic/184301/kea-dhcp-uefi-pxe-boot-sends-wrong-boot-file
I'm using netboot.xyz for network booting and I just switched to Kea DHCP. After the migration I noticed that network booting from UEFI bios does not work anymore, but legacy bios boot still does work.
Here are the configuration values I set in pfSense:
TFTP Server: IP of my netboot server
Next Server: IP of my netboot server
Default BIOS File Name: netboot.xyz.kpxe
UEFI 32 bit File Name: netboot.xyz.efi
UEFI 64 bit File Name: netboot.xyz.efi
ARM 64 bit File Name: netboot.xyz-arm64.efi
The Kea DHCP server always offers the default netboot.xyz.kpxe file to UEFI machines.
Here are the logs from Kea DHCP for an UEFI bios:
Nov 23 12:23:55 kea-dhcp4 14098 INFO [kea-dhcp4.dhcp4.0x3e2f2f5b9300] EVAL_RESULT Expression ipxe_64_lan_pool_0 evaluated to 1 Nov 23 12:23:55 kea-dhcp4 14098 INFO [kea-dhcp4.dhcp4.0x3e2f2f5b9300] EVAL_RESULT Expression ipxe_legacy_lan_pool_0 evaluated to 1 Nov 23 12:23:55 kea-dhcp4 14098 INFO [kea-dhcp4.dhcp4.0x3e2f2f5b9300] EVAL_RESULT Expression ipxe_64_lan evaluated to 1 Nov 23 12:23:55 kea-dhcp4 14098 INFO [kea-dhcp4.dhcp4.0x3e2f2f5b9300] EVAL_RESULT Expression ipxe_legacy_lan evaluated to 1 Nov 23 12:23:55 kea-dhcp4 14098 INFO [kea-dhcp4.leases.0x3e2f2f5b9300] DHCP4_LEASE_ALLOC [hwtype=1 46:15:16:cd:59:84], cid=[no info], tid=0xaccc68dd: lease 172.17.128.2 has been allocated for 86400 seconds Nov 23 12:23:55 kea-dhcp4 14098 INFO [kea-dhcp4.dhcpsrv.0x3e2f2f5b9300] EVAL_RESULT Expression pool_opt1_0 evaluated to 1 Nov 23 12:23:55 kea-dhcp4 14098 INFO [kea-dhcp4.dhcpsrv.0x3e2f2f5b9300] EVAL_RESULT Expression pool_lan_0 evaluated to 1
And here is the generated kea-dhcp4.conf file. (I just removed the reservations)
{
"Dhcp4": {
"interfaces-config": {
"interfaces": [
"mlxen0",
"mlxen0.2"
]
},
"lease-database": {
"type": "memfile",
"persist": true,
"name": "/var/lib/kea/dhcp4.leases"
},
"loggers": [
{
"name": "kea-dhcp4",
"output_options": [
{
"output": "syslog"
}
],
"severity": "INFO"
}
],
"valid-lifetime": 7200,
"max-valid-lifetime": 86400,
"ip-reservations-unique": false,
"echo-client-id": false,
"option-data": [
{
"name": "domain-name",
"data": "mydomain"
}
],
"option-def": [
{
"space": "dhcp4",
"name": "ldap-server",
"code": 95,
"type": "string"
}
],
"hooks-libraries": [
{
"library": "/usr/local/lib/kea/hooks/libdhcp_lease_cmds.so"
}
],
"control-socket": {
"socket-type": "unix",
"socket-name": "/tmp/kea4-ctrl-socket"
},
"authoritative": true,
"client-classes": [
{
"name": "ipxe_32_lan_pool_0",
"test": "option[93].hex == 0x0006",
"only-if-required": true,
"option-data": [
{
"name": "boot-file-name",
"data": "netboot.xyz.efi"
}
]
},
{
"name": "ipxe_64_lan_pool_0",
"test": "option[93].hex == 0x0007 or option[93].hex == 0x0009",
"only-if-required": true,
"option-data": [
{
"name": "boot-file-name",
"data": "netboot.xyz.efi"
}
]
},
{
"name": "ipxe_64arm_lan_pool_0",
"test": "option[93].hex == 0x000b",
"only-if-required": true,
"option-data": [
{
"name": "boot-file-name",
"data": "netboot.xyz-arm64.efi"
}
]
},
{
"name": "ipxe_legacy_lan_pool_0",
"test": "not member('ipxe_32_lan_pool_0') and not member('ipxe_64_lan_pool_0') and not member('ipxe_64arm_lan_pool_0')",
"only-if-required": true,
"option-data": [
{
"name": "boot-file-name",
"data": "netboot.xyz.kpxe"
}
]
},
{
"name": "pool_lan_0",
"test": "member('ALL')"
},
{
"name": "ipxe_32_lan",
"test": "option[93].hex == 0x0006",
"only-if-required": true,
"option-data": [
{
"name": "boot-file-name",
"data": "netboot.xyz.efi"
}
]
},
{
"name": "ipxe_64_lan",
"test": "option[93].hex == 0x0007 or option[93].hex == 0x0009",
"only-if-required": true,
"option-data": [
{
"name": "boot-file-name",
"data": "netboot.xyz.efi"
}
]
},
{
"name": "ipxe_64arm_lan",
"test": "option[93].hex == 0x000b",
"only-if-required": true,
"option-data": [
{
"name": "boot-file-name",
"data": "netboot.xyz-arm64.efi"
}
]
},
{
"name": "ipxe_legacy_lan",
"test": "not member('ipxe_32_lan') and not member('ipxe_64_lan') and not member('ipxe_64arm_lan')",
"only-if-required": true,
"option-data": [
{
"name": "boot-file-name",
"data": "netboot.xyz.kpxe"
}
]
},
{
"name": "pool_opt1_0",
"test": "member('ALL')"
}
],
"subnet4": [
{
"id": 1,
"subnet": "172.17.0.0/16",
"option-data": [
{
"name": "domain-name",
"data": "mydomain"
},
{
"name": "domain-search",
"data": "mydomain"
},
{
"name": "domain-name-servers",
"data": "172.17.1.1"
},
{
"name": "routers",
"data": "172.17.1.1"
},
{
"name": "netbios-name-servers",
"data": "172.17.2.1"
},
{
"name": "netbios-node-type",
"data": "8"
}
],
"pools": [
{
"pool": "172.17.128.0 - 172.17.128.199",
"client-class": "pool_lan_0",
"option-data": [
{
"name": "domain-name-servers",
"data": "172.17.1.1"
},
{
"name": "tftp-server-name",
"data": "172.17.2.17"
}
],
"require-client-classes": [
"ipxe_legacy_lan_pool_0",
"ipxe_32_lan_pool_0",
"ipxe_64_lan_pool_0",
"ipxe_64arm_lan_pool_0"
]
}
],
"valid-lifetime": 86400,
"next-server": "172.17.2.17",
"require-client-classes": [
"ipxe_legacy_lan",
"ipxe_32_lan",
"ipxe_64_lan",
"ipxe_64arm_lan"
],
"reservations-in-subnet": true
},
{
"id": 2,
"subnet": "172.20.0.0/16",
"option-data": [
{
"name": "domain-name-servers",
"data": "172.20.1.1"
},
{
"name": "routers",
"data": "172.20.1.1"
}
],
"pools": [
{
"pool": "172.20.128.0 - 172.20.128.255",
"client-class": "pool_opt1_0",
"option-data": [
{
"name": "domain-name-servers",
"data": "172.20.1.1"
}
]
}
],
"valid-lifetime": 86400,
"reservations-in-subnet": true
}
]
}
I noticed that the legacy classes in the require-client-classes are on top of all the other classes. After i changed the order so that the legacy classes are at the bottom netboot worked for legacy and UEFI boot.
I also created a patch file that fixes the problem in the services.inc file:
--- /etc/inc/services.inc.save 2023-11-24 15:19:26.797541000 +0100
+++ /etc/inc/services.inc 2023-11-24 15:24:17.000000000 +0100
@@ -1548,7 +1548,7 @@
if (!is_array($keapool['require-client-classes'])) {
$keapool['require-client-classes'] = [];
}
- array_unshift($keapool['require-client-classes'], $name);
+ $keapool['require-client-classes'][] = $name;
}
if (!empty($poolconf['rootpath'])) {
@@ -1719,7 +1719,7 @@
if (!is_array($keasubnet['require-client-classes'])) {
$keasubnet['require-client-classes'] = [];
}
- array_unshift($keasubnet['require-client-classes'], $name);
+ $keasubnet['require-client-classes'][] = $name;
}
if (!empty($dhcpifconf['rootpath'])) {
Can you please take a look at this if this is the correct solution to this problem?
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