Hello,
I'm experiencing strange issue, the Guest router started today to ignore the requests for specific IP class. Oct 19 16:22:49 dnsmasq-dhcp[24437]: 49204406 available DHCP subnet: 217.79.xxx.129/255.255.255.128 Oct 19 16:22:49 dnsmasq-dhcp[24437]: 49204406 available DHCP subnet: 66.206.xxx.179/255.255.255.248 Oct 19 16:22:49 dnsmasq-dhcp[24437]: 49204406 client provides name: ubuntu Oct 19 16:22:49 dnsmasq-dhcp[24437]: 49204406 DHCPDISCOVER(eth0) 1e:00:30:00:04:67 ignored Oct 19 16:23:53 dnsmasq-dhcp[24437]: 49204406 available DHCP subnet: 217.79.xxx.129/255.255.255.128 Oct 19 16:23:53 dnsmasq-dhcp[24437]: 49204406 available DHCP subnet: 66.206.xxx.179/255.255.255.248 Oct 19 16:23:53 dnsmasq-dhcp[24437]: 49204406 client provides name: ubuntu Oct 19 16:23:53 dnsmasq-dhcp[24437]: 49204406 DHCPDISCOVER(eth0) 1e:00:30:00:04:67 ignored root@r-6137-VMAMS:~# cat /etc/dhcphosts.txt | grep "1e:00:30:00:04:67" 1e:00:30:00:04:67,23.227.xxx.54,testignore001,infinite root@r-6137-VMAMS:~# cat /etc/dhcphosts.txt | wc -l 144 If I reboot any VM with an IP from this class 23.227.xxx.129, which was allocated without any issue before, after reboot is I'm going to see ignored and is going to be left without IP assigned. Setup: ACS 4.18.1 upgrade from previous version with VMware. Any suggestions? Thank you.