Attachment 845061 Details for Bug 1048342 – tcpdump showing dhcp packets arriving, but no dhcpd response

tcpdump showing dhcp packets arriving, but no dhcpd response

dhcpd-tcpdump (text/plain), 4.42 KB, created by sean darcy on 2014-01-03 19:08:27 UTC

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Creator: sean darcy

Created: 2014-01-03 19:08:27 UTC

Size: 4.42 KB

patch

obsolete

>No dhcp log messages. But tcpdump shows lots received:
>
>11:57:01.210319 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>11:57:02.210316 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>11:57:13.205292 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>11:57:14.205304 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>11:57:15.205282 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>11:57:18.897303 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:0b:82:40:0e:93, length 548
>11:57:21.983290 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:0b:82:40:0e:93, length 548
>11:57:25.061279 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:0b:82:40:0e:93, length 548
>11:57:26.200279 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>11:57:27.200284 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>11:57:28.199258 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>11:57:28.848254 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from cc:6d:a0:11:22:a0, length 548
>11:57:39.198233 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>11:57:40.195231 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>11:57:41.194227 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:15:99:6a:9c:94, length 554
>,,,,,,,,,
>
>Now I systemctl restart dhcpd, and it recognizes all the DHCP requests:
>
>Jan  2 11:59:36 new-gateway systemd[1]: Started DHCPv4 Server Daemon.
>Jan  2 11:59:36 new-gateway dhcpd: Internet Systems Consortium DHCP Server 4.2.5
>Jan  2 11:59:37 new-gateway dhcpd: Copyright 2004-2013 Internet Systems Consortium.
>Jan  2 11:59:37 new-gateway dhcpd: All rights reserved.
>Jan  2 11:59:37 new-gateway dhcpd: For info, please visit https://www.isc.org/software/dhcp/
>Jan  2 11:59:37 new-gateway dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file
>Jan  2 11:59:37 new-gateway dhcpd: Wrote 0 deleted host decls to leases file.
>Jan  2 11:59:37 new-gateway dhcpd: Wrote 0 new dynamic host decls to leases file.
>Jan  2 11:59:37 new-gateway dhcpd: Wrote 12 leases to leases file.
>Jan  2 11:59:37 new-gateway dhcpd:
>Jan  2 11:59:37 new-gateway dhcpd: No subnet declaration for wlan0 (no IPv4 addresses).
>Jan  2 11:59:37 new-gateway dhcpd: ** Ignoring requests on wlan0.  If this is not what
>Jan  2 11:59:37 new-gateway dhcpd:    you want, please write a subnet declaration
>Jan  2 11:59:37 new-gateway dhcpd:    in your dhcpd.conf file for the network segment
>Jan  2 11:59:37 new-gateway dhcpd:    to which interface wlan0 is attached. **
>Jan  2 11:59:37 new-gateway dhcpd:
>Jan  2 11:59:37 new-gateway dhcpd: Listening on LPF/external/00:1d:72:05:4a:68/24.0.0.0/8
>Jan  2 11:59:37 new-gateway dhcpd: Sending on LPF/external/00:1d:72:05:4a:68/24.0.0.0/8
>Jan  2 11:59:37 new-gateway dhcpd: Listening on LPF/internal/00:e0:4c:03:07:ba/10.10.11.0/24
>Jan  2 11:59:37 new-gateway dhcpd: Sending on LPF/internal/00:e0:4c:03:07:ba/10.10.11.0/24
>Jan  2 11:59:37 new-gateway dhcpd: Sending on   Socket/fallback/fallback-net
>Jan  2 11:59:38 new-gateway dhcpd: DHCPDISCOVER from 00:15:99:6a:9c:94 via internal
>Jan  2 11:59:38 new-gateway dhcpd: DHCPOFFER on 10.10.11.152 to 00:15:99:6a:9c:94 via internal
>Jan  2 11:59:38 new-gateway dhcpd: DHCPREQUEST for 10.10.11.152 (10.10.11.251) from 00:15:99:6a:9c:94 via internal
>Jan  2 11:59:38 new-gateway dhcpd: DHCPACK on 10.10.11.152 to 00:15:99:6a:9c:94 via internal
>Jan  2 11:59:40 new-gateway dhcpd: DHCPREQUEST for 10.10.11.152 (10.10.11.251) from 00:15:99:6a:9c:94 via internal
>Jan  2 11:59:40 new-gateway dhcpd: DHCPACK on 10.10.11.152 to 00:15:99:6a:9c:94 via internal
>Jan  2 11:59:51 new-gateway dhcpd: DHCPDISCOVER from 00:0b:82:40:0e:93 via internal
>Jan  2 11:59:51 new-gateway dhcpd: DHCPOFFER on 10.10.11.182 to 00:0b:82:40:0e:93 via internal
>Jan  2 11:59:51 new-gateway dhcpd: DHCPREQUEST for 10.10.11.182 (10.10.11.251) from 00:0b:82:40:0e:93 via internal
>Jan  2 11:59:51 new-gateway dhcpd: DHCPACK on 10.10.11.182 to 00:0b:82:40:0e:93 via internal

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