The issue only for whoever using Belkin Router to dial (IPOE and PPPOE) and access internet ,
for other vendor routers like Dlink / Linksys and static users session stable .
We got the information of packets on both vendor routers ( not working - Belkin and working -Dlink).
belkin router keep sending DNS request, once ME60 can’t receive DNS response (for many times), Belkin will disconnect session by sending PADT/DHCP-release packet.
We checked the Belkin router DNS server ip address 188.8.131.52 (primary) and 184.108.40.206 (secondary) . we tried to reach both ip address from ME60 .
x.x.21.53 not able reach , we can able to ping 220.127.116.11 . then we change 18.104.22.168 as a primary DNS ip address .
after change user session was stable .
Belkin Router can only one DNS server ip address . when primary DNS ip address 22.214.171.124 . it keep sending DNS request, once
router can’t receive DNS response (for many times), Belkin will disconnect session by sending PADT/DHCP-release packet.
It's Related to other vendor device issue . Belkin router can support only one DNS server . if in case DNS server down . need to change the DNS server ip address manually.