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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