serhiymakarenko/isc-kea-dockerized

Repo contains a dockerized version of the ISC Kea DHCP server and it's components.

isc-kea-dockerized's Issues

Creating a raw LPF socket on Docker for isc-kea-dhcp4-server fails

For the life of me I cannot actually get the image to listen to a port:

2021-06-19 15:59:18.520 WARN  [kea-dhcp4.dhcpsrv/1.140686782257600] DHCPSRV_OPEN_SOCKET_FAIL failed to open socket: failed to open socket on interface eth0, reason: Failed to create raw LPF socket

Relevant config bit:

{       
  "Dhcp4": {
    "interfaces-config": {
        "interfaces": [ "eth0" ]
    },  
[...]

Changing the config to:

{       
  "Dhcp4": {
    "interfaces-config": {
        "interfaces": [ "eth0" ],
        "dhcp-socket-type": "udp"
    },  
[...]

.. allows it to function:

2021-06-19 16:13:37.815 INFO  [kea-dhcp4.dhcpsrv/1.140528958781888] DHCPSRV_CFGMGR_SOCKET_TYPE_SELECT using socket type udp
2021-06-19 16:13:37.815 INFO  [kea-dhcp4.dhcpsrv/1.140528958781888] DHCPSRV_CFGMGR_ADD_IFACE listening on interface eth0

.. but of course without the crucial raw socket features. I've tried seccomp=unconfined & apparmor=unconfined but those didn't change anything. How are you running the image? Wondering if these raw LPF sockets are even feasible via Docker, or if there's something broken with my setup instead.