Your ISP's DHCP does not function correctly RT-AC66U

[yysenhimer]

Hello. I have searched the forums and tried the various fixes for this problem. Has a solution been found? I am on my third router in 2 months (luckily was able to exchange the last one) and have the problem again. Previous router RT-AC3200 had this problem so I replaced with RT-AC66U. Both had latest Merlin FM.

Motorola MB8600
Comcast Gig service
RT-AC66U

Unplugged all LAN ports, factory reset router, released/renewed IP, refreshed modem, changed WAN settings

No mac Clone
DHCP query frequency" -> "Normal
Extend the TTL value -> Yes
Spoof LAN TTL value-> "Yes
Enable the DHCP server-> "No

I tried the AC-3200 again, still same problem. Direct modem connection to computer works great. I have limited networking knowledge.

 

[yysenhimer]

Update - The information in this thread worked at least for now. Even the AC3200 now works.
https://communityforums.rogers.com/...ly-ALWAYS-with-ASUS-RT-68U-router/td-p/405506

I changed the LAN IP to 10.0.0.1 and the associated DHCP IP pool to 10.0.0.2 to 10.0.0.99. Reinstalled Merlin FM. Fingers crossed.

 

[RMerlin]

Disable the two TTL settings, these are only intended for some backwater ISPs that fudge the TTL to prevent end-users from running their own routers.

 

[yysenhimer]

I'll change those settings ga back. Thank you.