DHCP RENEW PROBLEM

DUFEU · Nov 8, 2018, 10:56 AM

Hello,

Since two weeks we have a problem on our DHCP Server with dhcp adress renew on our clients.
All 24 hours, clients lose IP adress and there is a network break for client.

Problem is on dhcp renew adress.

On syslog :
<191>1 2018-10-29T00:32:42+01:00 10.17.13.2 dhcpd - - - dhcpd: reuse_lease: lease age 1191 (secs) under 25% threshold, reply with unaltered, existing lease for 10.17.0.145
<190>1 2018-10-29T00:32:42+01:00 10.17.13.2 dhcpd - - - dhcpd: DHCPDISCOVER from bc:5f:f4:f7:2b:18 (Toyal-P525) via lagg0.1
<191>1 2018-10-29T00:32:42+01:00 10.17.13.2 dhcpd - - - dhcpd: ICMP Echo reply while lease 10.17.0.145 valid.
<187>1 2018-10-29T00:32:42+01:00 10.17.13.2 dhcpd - - - dhcpd: Abandoning IP address 10.17.0.145: pinged before offer
<190>1 2018-10-29T00:32:42+01:00 10.17.13.2 dhcpd - - - dhcpd: Removed reverse map on 145.0.17.10.in-addr.arpa.
But client TOYAL-P525 was 10.17.0.145 !!!!

After :
<190>1 2018-10-29T01:12:51+01:00 10.17.13.2 dhcpd - - - dhcpd: DHCPREQUEST for 10.17.0.145 from bc:5f:f4:f7:2b:18 via lagg0.1: unknown lease 10.17.0.145.

On DHCP Lease in PFSENSE:
!accous.accous.toyal-europe - Status DHCP Leases - Mozilla Firefox_2.jpg!

And client take a new ip adress :
!accous.accous.toyal-europe - Status DHCP Leases - Mozilla Firefox_3.jpg!

I don't understand why client didn't renew his adress...