<div dir="ltr">Saw that I pasted one mac from syslog and another from dhcpdump in the initial post.<div><br></div><div>Here is the matching one, same client and same problem.</div><div><br></div><div>Jan 26 12:02:28 kea-dhcp01 kea-dhcp4: INFO  DHCP4_LEASE_ALLOC [hwtype=1 00:02:ab:12:d2:fe], cid=[00:67:73:77:2d:32:30:32:30:70:61:2d:31:32:2d:64:32:2d:66:65], tid=0x3219188d: lease xxx.160.93.130 has been allocated for 21600 seconds<br>Jan 26 12:02:28 kea-dhcp01 kea-dhcp4: ERROR DHCP4_PACKET_SEND_FAIL [hwtype=1 00:02:ab:12:d2:fe], cid=[00:67:73:77:2d:32:30:32:30:70:61:2d:31:32:2d:64:32:2d:66:65], tid=0x3219188d: failed to send DHCPv4 packet: pkt4 send failed: sendmsg() returned  with an error: Permission denied<br></div><div><br></div><div><br></div><div>root@kea-dhcp01:/var/lib/kea# dhcpdump -i ens192 -h 00:02:ab:12:d2:fe<br>  TIME: 2021-01-26 11:59:51.689<br>    IP: xxx.160.93.130 (78:ba:f9:2f:3:d6) > xxx.233.57.226 (0:50:56:86:c9:a1)<br>    OP: 1 (BOOTPREQUEST)<br> HTYPE: 1 (Ethernet)<br>  HLEN: 6<br>  HOPS: 0<br>   XID: 3219188d<br>  SECS: 6945<br> FLAGS: 0<br>CIADDR: 0.0.0.0<br>YIADDR: 0.0.0.0<br>SIADDR: 0.0.0.0<br>GIADDR: 0.0.0.0<br>CHADDR: 00:02:ab:12:d2:fe:00:00:00:00:00:00:00:00:00:00<br> SNAME: .<br> FNAME: .<br>OPTION:  53 (  1) DHCP message type         3 (DHCPREQUEST)<br>OPTION:  57 (  2) Maximum DHCP message size 1024<br>OPTION:  55 ( 16) Parameter Request List     54 (Server identifier)<br>                                             51 (IP address leasetime)<br>                                             58 (T1)<br>                                             59 (T2)<br>                                              1 (Subnet mask)<br>                                              3 (Routers)<br>                                              6 (DNS server)<br>                                             15 (Domainname)<br>                                             28 (Broadcast address)<br>                                             42 (NTP servers)<br>                                             66 (TFTP server name)<br>                                             67 (Bootfile name)<br>                                            132 (???)<br>                                            240 (???)<br>                                            250 (???)<br>                                            254 (???)<br>                                            <br>OPTION:  12 ( 20) Host name                 gsw-2020pa-12-d2-fe<br>OPTION:  61 ( 20) Client-identifier         00:67:73:77:2d:32:30:32:30:70:61:2d:31:32:2d:64:32:2d:66:65<br>OPTION:  60 ( 10) Vendor class identifier   GSW-2020PA<br>OPTION:  77 ( 10) User-class Identification 0956657220312e30 .Ver 1.0<br>                                            3565             5e<br>OPTION:  54 (  4) Server identifier         xxx.233.57.226<br>OPTION:  50 (  4) Request IP address        xxx.160.93.130<br>---------------------------------------------------------------------------<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jan 26, 2021 at 11:52 AM Fredrik V <<a href="mailto:fredrik@cisko.se">fredrik@cisko.se</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Hi,</div><div><br></div><div>Found this message in syslog and I cant figure out whats going on. </div><div><br></div>Jan 26 11:47:40 kea-dhcp01 kea-dhcp4: ERROR DHCP4_PACKET_SEND_FAIL [hwtype=1 00:02:ab:12:d2:fe], cid=[00:67:73:77:2d:32:30:32:30:70:61:2d:31:32:2d:64:32:2d:66:65], tid=0x3219188d: failed to send DHCPv4 packet: pkt4 send failed: sendmsg() returned  with an error: Permission denied<br><div><br></div><div>Here is the DHCPREQUEST. We get the request. We do not send any kind reply. </div><div><br></div><div>What is causing the Permission denied?</div><div><br></div><div>root@kea-dhcp01:/var/lib/kea# dhcpdump -i ens192 -h 00:02:ab:12:d1:78<br>  TIME: 2021-01-26 10:39:20.565<br>    IP: xxx.160.93.131 (78:ba:f9:2f:3:d6) > xxx.233.57.226 (0:50:56:86:c9:a1)<br>    OP: 1 (BOOTPREQUEST)<br> HTYPE: 1 (Ethernet)<br>  HLEN: 6<br>  HOPS: 0<br>   XID: 61f7346a<br>  SECS: 1899<br> FLAGS: 0<br>CIADDR: 0.0.0.0<br>YIADDR: 0.0.0.0<br>SIADDR: 0.0.0.0<br>GIADDR: 0.0.0.0<br>CHADDR: 00:02:ab:12:d1:78:00:00:00:00:00:00:00:00:00:00<br> SNAME: .<br> FNAME: .<br>OPTION:  53 (  1) DHCP message type         3 (DHCPREQUEST)<br>OPTION:  57 (  2) Maximum DHCP message size 1024<br>OPTION:  55 ( 16) Parameter Request List     54 (Server identifier)<br>                                             51 (IP address leasetime)<br>                                             58 (T1)<br>                                             59 (T2)<br>                                              1 (Subnet mask)<br>                                              3 (Routers)<br>                                              6 (DNS server)<br>                                             15 (Domainname)<br>                                             28 (Broadcast address)<br>                                             42 (NTP servers)<br>                                             66 (TFTP server name)<br>                                             67 (Bootfile name)<br>                                            132 (???)<br>                                            240 (???)<br>                                            250 (???)<br>                                            254 (???)<br>                                            <br>OPTION:  12 ( 20) Host name                 gsw-2020pa-12-d1-78<br>OPTION:  61 ( 20) Client-identifier         00:67:73:77:2d:32:30:32:30:70:61:2d:31:32:2d:64:31:2d:37:38<br>OPTION:  60 ( 10) Vendor class identifier   GSW-2020PA<br>OPTION:  77 ( 10) User-class Identification 0956657220312e30 .Ver 1.0<br>                                            3565             5e<br>OPTION:  54 (  4) Server identifier         xxx.233.57.226<br>OPTION:  50 (  4) Request IP address        xxx.160.93.131<br></div><div><br></div><div>Regards,</div><div><br></div><div>//F</div></div>
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