Bug #15518
open
KEA DHCP sends no tftp server name
0%
Description
I've a working environment with ISC dhcp server booting a raspberry pi over network. When switching to KEA dhcp the "DHCP Offer" don't contain the TFTP server name. Switching back to ISC dhcp solves the problem. I tried also to apply the soloutin from https://redmine.pfsense.org/issues/15032 but this didn't helped.
Attached the tcpdump with ISC and KEA to show the difference
The file ExtractFrom_kea-dhcp4.conf contains an enxcerpt from my kea config, the "tftp-server-name" is there.
Files
| KEA DHCP Offer.png (85.2 KB) KEA DHCP Offer.png | TCPdump with KEA | ||
| ISC DHCP Offer.png (82.8 KB) ISC DHCP Offer.png | TCPDump with ISC | ||
| ExtractFrom_kea-dhcp4.conf (1.31 KB) ExtractFrom_kea-dhcp4.conf | Excerpt from kea config | ||
| clipboard-202405251029-bx7yu.png (36.5 KB) clipboard-202405251029-bx7yu.png |
Updated by Lev Prokofev about 1 month ago
I can confirm this behavior on 24.03, I was able to fix it by adding the string "code": 66 in the config
Example:
"pools": [
{
"pool": "192.168.200.30 - 192.168.200.100",
"client-class": "pool_opt9_0",
"option-data": [
{
"name": "domain-name-servers",
"data": "192.168.200.1, 1.1.1.1, 8.8.8.8"
},
{
"code": 66,
"name": "tftp-server-name",
"data": "192.168.200.200"
},
Updated by Danilo Zrenjanin about 1 month ago
- Status changed from New to Confirmed
I can confirm this behavior on 24.03. The Lev's workaround works.
Updated by Christian McDonald 8 days ago
- Assignee set to Christian McDonald
This is strange because as per Kea documentation:
Note that either name or code is required; there is no need to specify both...
https://kea.readthedocs.io/en/kea-2.6.0/arm/dhcp4-srv.html#standard-dhcpv4-options
Updated by 
Updated by Christian McDonald 4 days ago
- Target version set to CE-Next
- Plus Target Version set to 24.08