求大神帮我看看这个日志表达什么意思

Fri Apr 2 20:19:12 2021 daemon.debug dhcpd: reuse_lease: lease age 1820 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.4 Fri Apr 2 20:19:12 2021 daemon.info dhcpd: DHCPDISCOVER from 18:40:a4:d7:3a:63 via eth0.8 Fri Apr 2 20:19:13 2021 daemon.info dhcpd: DHCPOFFER on 192.168.8.4 to 18:40:a4:d7:3a:63 via eth0.8 Fri Apr 2 20:19:13 2021 daemon.debug dhcpd: reuse_lease: lease age 1821 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.4 Fri Apr 2 20:19:13 2021 daemon.info dhcpd: DHCPREQUEST for 192.168.8.4 (192.168.8.1) from 18:40:a4:d7:3a:63 via eth0.8 Fri Apr 2 20:19:13 2021 daemon.info dhcpd: DHCPACK on 192.168.8.4 to 18:40:a4:d7:3a:63 via eth0.8 Fri Apr 2 20:19:57 2021 daemon.debug dhcpd: reuse_lease: lease age 3245 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.2 Fri Apr 2 20:19:57 2021 daemon.info dhcpd: DHCPDISCOVER from 18:40:a4:d7:36:85 via eth0.8 Fri Apr 2 20:19:58 2021 daemon.info dhcpd: DHCPOFFER on 192.168.8.2 to 18:40:a4:d7:36:85 via eth0.8 Fri Apr 2 20:19:58 2021 daemon.debug dhcpd: reuse_lease: lease age 3246 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.2 Fri Apr 2 20:19:58 2021 daemon.info dhcpd: DHCPREQUEST for 192.168.8.2 (192.168.8.1) from 18:40:a4:d7:36:85 via eth0.8 Fri Apr 2 20:19:58 2021 daemon.info dhcpd: DHCPACK on 192.168.8.2 to 18:40:a4:d7:36:85 via eth0.8 Fri Apr 2 20:20:50 2021 daemon.debug dhcpd: reuse_lease: lease age 2338 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.3 Fri Apr 2 20:20:50 2021 daemon.info dhcpd: DHCPDISCOVER from 18:40:a4:d7:3a:d6 via eth0.8 Fri Apr 2 20:20:51 2021 daemon.info dhcpd: DHCPOFFER on 192.168.8.3 to 18:40:a4:d7:3a:d6 via eth0.8 Fri Apr 2 20:20:51 2021 daemon.debug dhcpd: reuse_lease: lease age 2339 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.3 Fri Apr 2 20:20:51 2021 daemon.info dhcpd: DHCPREQUEST for 192.168.8.3 (192.168.8.1) from 18:40:a4:d7:3a:d6 via eth0.8 Fri Apr 2 20:20:51 2021 daemon.info dhcpd: DHCPACK on 192.168.8.3 to 18:40:a4:d7:3a:d6 via eth0.8 Fri Apr 2 20:21:33 2021 daemon.debug dhcpd: reuse_lease: lease age 1961 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.4 Fri Apr 2 20:21:33 2021 daemon.info dhcpd: DHCPDISCOVER from 18:40:a4:d7:3a:63 via eth0.8 Fri Apr 2 20:21:34 2021 daemon.info dhcpd: DHCPOFFER on 192.168.8.4 to 18:40:a4:d7:3a:63 via eth0.8 Fri Apr 2 20:21:34 2021 daemon.debug dhcpd: reuse_lease: lease age 1962 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.4 Fri Apr 2 20:21:34 2021 daemon.info dhcpd: DHCPREQUEST for 192.168.8.4 (192.168.8.1) from 18:40:a4:d7:3a:63 via eth0.8 Fri Apr 2 20:21:34 2021 daemon.info dhcpd: DHCPACK on 192.168.8.4 to 18:40:a4:d7:3a:63 via eth0.8 Fri Apr 2 20:22:17 2021 daemon.debug dhcpd: reuse_lease: lease age 3385 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.2 Fri Apr 2 20:22:17 2021 daemon.info dhcpd: DHCPDISCOVER from 18:40:a4:d7:36:85 via eth0.8 Fri Apr 2 20:22:18 2021 daemon.info dhcpd: DHCPOFFER on 192.168.8.2 to 18:40:a4:d7:36:85 via eth0.8 Fri Apr 2 20:22:18 2021 daemon.debug dhcpd: reuse_lease: lease age 3386 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.2 Fri Apr 2 20:22:18 2021 daemon.info dhcpd: DHCPREQUEST for 192.168.8.2 (192.168.8.1) from 18:40:a4:d7:36:85 via eth0.8 Fri Apr 2 20:22:18 2021 daemon.info dhcpd: DHCPACK on 192.168.8.2 to 18:40:a4:d7:36:85 via eth0.8 Fri Apr 2 20:23:14 2021 daemon.debug dhcpd: reuse_lease: lease age 2482 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.3 Fri Apr 2 20:23:14 2021 daemon.info dhcpd: DHCPDISCOVER from 18:40:a4:d7:3a:d6 via eth0.8 Fri Apr 2 20:23:15 2021 daemon.info dhcpd: DHCPOFFER on 192.168.8.3 to 18:40:a4:d7:3a:d6 via eth0.8 Fri Apr 2 20:23:15 2021 daemon.debug dhcpd: reuse_lease: lease age 2483 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.3 Fri Apr 2 20:23:15 2021 daemon.info dhcpd: DHCPREQUEST for 192.168.8.3 (192.168.8.1) from 18:40:a4:d7:3a:d6 via eth0.8 Fri Apr 2 20:23:15 2021 daemon.info dhcpd: DHCPACK on 192.168.8.3 to 18:40:a4:d7:3a:d6 via eth0.8 Fri Apr 2 20:23:53 2021 daemon.debug dhcpd: reuse_lease: lease age 2101 (secs) under 25% threshold, reply with unaltered, existing lease for 192.168.8.4 Fri Apr 2 20:23:53 2021 daemon.info dhcpd: DHCPDISCOVER from 18:40:a4:d7:3a:63 via eth0.8 Fri Apr 2 20:23:54 2021 daemon.info dhcpd: DHCPOFFER on 192.168.8.4 to 18:40:a4:d7:3a:63 via eth0.8