Just upgraded from 18 > 19. dhcpd works, for a while and then stops
recognizing DCHP requests. On restart, it works again.
Here I start tailing /var/log/messages:
Jan 2 11:57:00 new-gateway systemd-logind[316]: New session 6 of user root.
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
but later it will stop recognizing the DHCPDISCOVER packets. No log
message about failure or error.
Any help appreciated.
sean
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