[lease an ipv4 address for one week as lease time is for 168 hrs]
Actual Behaviour:
_[pihole.log is show requestes every 2-3 min in the pihole.log. I also used "nmap --script broadcast-dhcp-discover 10.0.0.15" and it states 2 min leases
Starting Nmap 7.70 ( https://nmap.org ) at 2020-07-19 19:28 EDT
Pre-scan script results:
| broadcast-dhcp-discover:
| Response 1 of 1:
| IP Offered: 10.0.0.21
| DHCP Message Type: DHCPOFFER
| Server Identifier: 10.0.0.15
| IP Address Lease Time: 2m00s
| Renewal Time Value: 1m00s
| Rebinding Time Value: 1m45s
| Subnet Mask: 255.255.255.0
| Broadcast Address: 10.0.0.255
| Domain Name Server: 10.0.0.15
| Domain Name: lan
|_ Router: 10.0.0.1
Nmap scan report for 10.0.0.15
Host is up (0.000056s latency).
Not shown: 998 closed ports
PORT STATE SERVICE
53/tcp open domain
80/tcp open http
I have had a pihole for a year and this never happened. Prior to doing a fresh os and pihole install thinking it would fix the problem any ios device would connect and show dns requests but would not get any response to the devices. Very bizarre because any device other device would work.
]_
my ios devices are still losing internet connectivity after a period of "sleeping" i have to turn wifi on and off for it to work and it gets assigned the same private ip. YET before i do that it still has a private ip and dns queries are being routed to the pihole and i cant pings are unresponsive.
This appears to be an issue on the devices. I will note that I have multiple IOS devices (all on latest stable IOS release) and have not had this issue.
SOLVED. on the g3100 router/gateway their is a setting for SON Wi-Fi. Has something to do mesh networking. If you disable it everything has connectivity. Thanks all for you responses.