kea dhcp-server does not initialize when some of the interfaces are in a vrf.
using this config:
set interfaces ethernet eth1 address '192.168.1.1/24' set interfaces ethernet eth2 address '192.168.2.1/24' set interfaces ethernet eth2 vrf 'test1' set interfaces ethernet eth3 address '192.168.3.1/24' set interfaces ethernet eth4 address '192.168.4.1/24' set interfaces ethernet eth4 vrf 'test2' set interfaces ethernet eth7 address '192.168.0.1/30' set service dhcp-server shared-network-name eth1 option default-router '192.168.1.1' set service dhcp-server shared-network-name eth1 subnet 192.168.1.0/24 lease '300' set service dhcp-server shared-network-name eth1 subnet 192.168.1.0/24 range default start '192.168.1.10' set service dhcp-server shared-network-name eth1 subnet 192.168.1.0/24 range default stop '192.168.1.100' set service dhcp-server shared-network-name eth1 subnet 192.168.1.0/24 subnet-id '1' set service dhcp-server shared-network-name eth2 option default-router '192.168.2.1' set service dhcp-server shared-network-name eth2 subnet 192.168.2.0/24 lease '300' set service dhcp-server shared-network-name eth2 subnet 192.168.2.0/24 range default start '192.168.2.10' set service dhcp-server shared-network-name eth2 subnet 192.168.2.0/24 range default stop '192.168.2.100' set service dhcp-server shared-network-name eth2 subnet 192.168.2.0/24 subnet-id '2' set service dhcp-server shared-network-name eth3 option default-router '192.168.3.1' set service dhcp-server shared-network-name eth3 subnet 192.168.3.0/24 lease '300' set service dhcp-server shared-network-name eth3 subnet 192.168.3.0/24 range default start '192.168.3.10' set service dhcp-server shared-network-name eth3 subnet 192.168.3.0/24 range default stop '192.168.3.100' set service dhcp-server shared-network-name eth3 subnet 192.168.3.0/24 subnet-id '3' set service dhcp-server shared-network-name eth4 option default-router '192.168.4.1' set service dhcp-server shared-network-name eth4 subnet 192.168.4.0/24 lease '300' set service dhcp-server shared-network-name eth4 subnet 192.168.4.0/24 range default start '192.168.4.10' set service dhcp-server shared-network-name eth4 subnet 192.168.4.0/24 range default stop '192.168.4.100' set service dhcp-server shared-network-name eth4 subnet 192.168.4.0/24 subnet-id '4' set vrf bind-to-all set vrf name management table '100' set vrf name test1 table '1001' set vrf name test2 table '1002'
logs show that it fails to initialize on the interfaces that are within a vrf and clients do not get a lease. interfaces on the default vrf are unaffected and dhcp server assigns leases normally.
[...] Apr 06 16:42:53 kea-dhcp4[2540]: 2024-04-06 16:42:53.647 WARN [kea-dhcp4.dhcpsrv/2540.140360373832128] DHCPSRV_OPEN_SOCKET_FAIL failed to open socket: Failed to open socket on interface eth2, reason: failed to bind fallback socket to address 192.168.2.1, port 67, reason: Cannot assign requested address - is another DHCP server running? Apr 06 16:42:53 kea-dhcp4[2540]: 2024-04-06 16:42:53.652 WARN [kea-dhcp4.dhcpsrv/2540.140360373832128] DHCPSRV_OPEN_SOCKET_FAIL failed to open socket: Failed to open socket on interface eth4, reason: failed to bind fallback socket to address 192.168.4.1, port 67, reason: Cannot assign requested address - is another DHCP server running? Apr 06 16:42:53 kea-dhcp4[2540]: 2024-04-06 16:42:53.661 WARN [kea-dhcp4.dhcpsrv/2540.140360373832128] DHCPSRV_OPEN_SOCKET_FAIL failed to open socket: Failed to open socket on interface test1, reason: failed to bind fallback socket to address 127.0.0.1, port 67, reason: Address already in use - is another DHCP server running? Apr 06 16:42:53 kea-dhcp4[2540]: 2024-04-06 16:42:53.661 WARN [kea-dhcp4.dhcpsrv/2540.140360373832128] DHCPSRV_OPEN_SOCKET_FAIL failed to open socket: Failed to open socket on interface test2, reason: failed to bind fallback socket to address 127.0.0.1, port 67, reason: Address already in use - is another DHCP server running? [...]