I’m getting the same issue that described here
system log on flint:
Sat Dec 4 22:33:40 2021 daemon.notice netifd: dhcp (3460): udhcpc: lease lost, entering init state
Sat Dec 4 22:33:40 2021 daemon.notice netifd: Interface ‘dhcp’ has lost the connection
Sat Dec 4 22:33:46 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending select for X
Sat Dec 4 22:33:46 2021 daemon.notice netifd: dhcp (3460): udhcpc: lease of X obtained, lease time 600
Sat Dec 4 22:33:46 2021 daemon.notice netifd: Interface ‘dhcp’ is now up
Sat Dec 4 22:33:46 2021 user.info mwan3rtmon[3306]: Detect rtchange event.
Sat Dec 4 22:33:46 2021 user.notice firewall: Reloading firewall due to ifup of dhcp (eth0)
Sat Dec 4 22:38:46 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending renew to X
Sat Dec 4 22:38:46 2021 daemon.notice netifd: dhcp (3460): udhcpc: send: Network unreachable
Sat Dec 4 22:38:46 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending renew to 0.0.0.0
Sat Dec 4 22:41:16 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending renew to 0.0.0.0
Sat Dec 4 22:42:31 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending renew to 0.0.0.0
Sat Dec 4 22:43:08 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending renew to 0.0.0.0
Sat Dec 4 22:43:26 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending renew to 0.0.0.0
Sat Dec 4 22:43:36 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending renew to 0.0.0.0
Sat Dec 4 22:43:40 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending renew to 0.0.0.0
Sat Dec 4 22:43:42 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending renew to 0.0.0.0
Sat Dec 4 22:43:43 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending renew to 0.0.0.0
Sat Dec 4 22:43:43 2021 daemon.notice netifd: dhcp (3460): udhcpc: lease lost, entering init state
Sat Dec 4 22:43:43 2021 daemon.notice netifd: Interface ‘dhcp’ has lost the connection
Sat Dec 4 22:43:49 2021 daemon.notice netifd: dhcp (3460): udhcpc: sending select for X
Sat Dec 4 22:43:49 2021 daemon.notice netifd: dhcp (3460): udhcpc: lease of x obtained, lease time 600
Sat Dec 4 22:43:49 2021 daemon.notice netifd: Interface ‘dhcp’ is now up
I’m using last release version 3.207
thanks