Hello, I'm running into an issue with Kea that I am unable to send the DHCPOFFER packet to the client. After enabling debug I see that I'm getting a permission denied error. The server is running Ubuntu 20.04, I've tried the isc-kea packages for both 2.0.1 and 2.0.2 with the same results. Does anyone have any suggestions on what to try?
2022-03-08 14:09:14.872 DEBUG [kea-dhcp4.packets/6691.140535278995904] DHCP4_BUFFER_RECEIVED received buffer from 10.201.1.6:67 to 10.201.1.2:67 over interface ens192 2022-03-08 14:09:14.872 DEBUG [kea-dhcp4.options/6691.140535278995904] DHCP4_BUFFER_UNPACK parsing buffer received from 10.201.1.6 to 10.201.1.2 over interface ens192 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.packets/6691.140535278995904] DHCP4_PACKET_RECEIVED [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: DHCPDISCOVER (type 1) received from 10.201.1.6 to 10.201.1.2 on interface ens192 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.packets/6691.140535278995904] DHCP4_QUERY_DATA [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20, packet details: local_address=10.201.1.2:67, remote_address=10.201.1.6:67, msg_type=DHCPDISCOVER (1), transid=0x20, options: type=012, len=010: "esx-01-ilo" (string) type=050, len=004: 10.201.1.10 (ipv4-address) type=053, len=001: 1 (uint8) type=055, len=015: 1(uint8) 2(uint8) 3(uint8) 4(uint8) 6(uint8) 15(uint8) 28(uint8) 33(uint8) 42(uint8) 43(uint8) 44(uint8) 58(uint8) 59(uint8) 100(uint8) 101(uint8) type=060, len=007: "CPQRIB3" (string) type=061, len=010: 00:94:40:c9:40:f4:5c:00:00:00 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.dhcpsrv/6691.140535278995904] DHCPSRV_CFGMGR_SUBNET4_ADDR selected subnet 10.201.1.0/24 for packet received by matching address 10.201.1.6 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.packets/6691.140535278995904] DHCP4_SUBNET_SELECTED [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: the subnet with ID 1 was selected for client assignments 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.packets/6691.140535278995904] DHCP4_SUBNET_DATA [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: the selected subnet details: 10.201.1.0/24 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.hosts/6691.140535278995904] HOSTS_CFG_GET_ONE_SUBNET_ID_IDENTIFIER get one host with IPv4 reservation for subnet id 1, identified by hwaddr=9440C940F45C 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.hosts/6691.140535278995904] HOSTS_CFG_GET_ALL_IDENTIFIER get all hosts with reservations using identifier: hwaddr=9440C940F45C 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.hosts/6691.140535278995904] HOSTS_CFG_GET_ALL_IDENTIFIER_HOST using identifier: hwaddr=9440C940F45C, found host: hwaddr=9440C940F45C ipv4_subnet_id=1 hostname=esx-01-ilo ipv4_reservation=10.201.1.10 siaddr=(no) sname=(empty) file=(empty) key=(empty) ipv6_reservations=(none) 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.hosts/6691.140535278995904] HOSTS_CFG_GET_ALL_IDENTIFIER_COUNT using identifier hwaddr=9440C940F45C, found 1 host(s) 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.hosts/6691.140535278995904] HOSTS_CFG_GET_ONE_SUBNET_ID_IDENTIFIER_HOST using subnet id 1 and identifier hwaddr=9440C940F45C, found host: hwaddr=9440C940F45C ipv4_subnet_id=1 hostname=esx-01-ilo ipv4_reservation=10.201.1.10 siaddr=(no) sname=(empty) file=(empty) key=(empty) ipv6_reservations=(none) 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.dhcp4/6691.140535278995904] DHCP4_CLASS_ASSIGNED [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: client packet has been assigned to the following class(es): KNOWN 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.dhcp4/6691.140535278995904] DHCP4_CLASS_ASSIGNED [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: client packet has been assigned to the following class(es): ALL, VENDOR_CLASS_CPQRIB3, KNOWN 2022-03-08 14:09:14.873 DEBUG [kea-dhcp4.ddns/6691.140535278995904] DHCP4_CLIENT_HOSTNAME_PROCESS [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: processing client's Hostname option 2022-03-08 14:09:14.874 DEBUG [kea-dhcp4.ddns/6691.140535278995904] DHCP4_CLIENT_HOSTNAME_DATA [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: client sent Hostname option: esx-01-ilo 2022-03-08 14:09:14.874 DEBUG [kea-dhcp4.ddns/6691.140535278995904] DHCP4_RESERVED_HOSTNAME_ASSIGNED [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: server assigned reserved hostname esx-01-ilo.flagler.cloud 2022-03-08 14:09:14.874 DEBUG [kea-dhcp4.dhcpsrv/6691.140535278995904] DHCPSRV_MYSQL_GET_CLIENTID obtaining IPv4 leases for client ID 00:94:40:c9:40:f4:5c:00:00:00 2022-03-08 14:09:14.874 DEBUG [kea-dhcp4.dhcpsrv/6691.140535278995904] DHCPSRV_MYSQL_GET_HWADDR obtaining IPv4 leases for hardware address hwtype=1 94:40:c9:40:f4:5c 2022-03-08 14:09:14.874 DEBUG [kea-dhcp4.alloc-engine/6691.140535278995904] ALLOC_ENGINE_V4_DISCOVER_HR client [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20 sending DHCPDISCOVER has reservation for the address 10.201.1.10 2022-03-08 14:09:14.874 DEBUG [kea-dhcp4.dhcpsrv/6691.140535278995904] DHCPSRV_MYSQL_GET_ADDR4 obtaining IPv4 lease for address 10.201.1.10 2022-03-08 14:09:14.875 INFO [kea-dhcp4.leases/6691.140535278995904] DHCP4_LEASE_ADVERT [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: lease 10.201.1.10 will be advertised 2022-03-08 14:09:14.875 DEBUG [kea-dhcp4.options/6691.140535278995904] DHCP4_PACKET_PACK [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: preparing on-wire format of the packet to be sent 2022-03-08 14:09:14.875 DEBUG [kea-dhcp4.packets/6691.140535278995904] DHCP4_PACKET_SEND [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: trying to send packet DHCPOFFER (type 2) from 10.201.1.2:67 to 255.255.255.255:68 on interface ens192 2022-03-08 14:09:14.875 DEBUG [kea-dhcp4.packets/6691.140535278995904] DHCP4_RESPONSE_DATA [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: responding with packet DHCPOFFER (type 2), packet details: local_address=10.201.1.2:67, remote_address=255.255.255.255:68, msg_type=DHCPOFFER (2), transid=0x20, options: type=001, len=004: 4294967040 (uint32) type=003, len=004: 10.201.1.1 type=006, len=008: 10.203.255.11 10.203.255.12 type=012, len=024: "esx-01-ilo.flagler.cloud" (string) type=015, len=013: "flagler.cloud" (string) type=042, len=004: 10.203.255.13 type=051, len=004: 604800 (uint32) type=053, len=001: 2 (uint8) type=054, len=004: 10.201.1.2 type=058, len=004: 64800 (uint32) type=059, len=004: 129600 (uint32) type=061, len=010: 00:94:40:c9:40:f4:5c:00:00:00 2022-03-08 14:09:14.875 ERROR [kea-dhcp4.packets/6691.140535278995904] DHCP4_PACKET_SEND_FAIL [hwtype=1 94:40:c9:40:f4:5c], cid=[00:94:40:c9:40:f4:5c:00:00:00], tid=0x20: failed to send DHCPv4 packet: pkt4 send failed: sendmsg() returned with an error: Permission denied Thanks, Dustin
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