Thanks Dan and everyone else for your suggestions. I actually found the issue and tested it over the last few days. It was in my kea-dhcp4.conf file. I had dhcp-socket-type under the interface config set to udp. Once I changed it to raw it started working as expected.
-Dustin On Tue, Mar 8, 2022 at 2:15 PM Dan Oachs <doa...@gac.edu> wrote: > I feel like I had a similar error message when the firewall on my system > was not allowing the traffic. > > Another possibility would be selinux if you have that enabled. > > --Dan > > On Tue, Mar 8, 2022 at 11:24 AM Dustin Berube <dustin.ber...@gmail.com> > wrote: > >> Thanks Chad & Bob, I'm replying to the list to update the thread. I >> double checked the permissions and went ahead as a test and ran kea as root >> and I'm still getting the same error. >> >> ps aux | grep kea >> root 13707 0.0 1.2 44312 25060 ? Ss 17:17 0:00 >> /usr/sbin/kea-dhcp4 -c /etc/kea/kea-dhcp4.conf >> >> getcap /usr/sbin/kea-dhcp4 >> /usr/sbin/kea-dhcp4 = cap_net_bind_service,cap_net_raw+ep >> >> On Tue, Mar 8, 2022 at 10:46 AM Chad Catlett <> wrote: >> >>> On 3/8/22 08:54, Dustin Berube wrote: >>> >>> 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 >>> >>> >>> Dustin, >>> >>> Ensure that Kea is running proper permissions. Not being able to send >>> the offer makes me think Kea isn't running as root and needs additional >>> permissions to send raw packets. If running on Linux, check out >>> https://kea.readthedocs.io/en/kea-2.0.2-doc/arm/install.html#running-kea-from-a-non-root-account-on-linux >>> . >>> >>> >>> Chad >>> >>> -- >>> Chad Catlett >>> >>> -- >> ISC funds the development of this software with paid support >> subscriptions. Contact us at https://www.isc.org/contact/ for more >> information. >> >> To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. >> >> Kea-users mailing list >> Kea-users@lists.isc.org >> https://lists.isc.org/mailman/listinfo/kea-users >> >
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