Monthly Archives: October 2021

NBN Unifi USG 3P PPPOE settings

I just switched my NBN from Telstra to Spintel.

Telstra is using DHCP while Spintel is using PPPOE. But when I configure the usrename and password for my WAN, USG can’t connect to internet.

Spent lots of time to troubleshot this issue, and then I notice that there is a log on USG

Oct 29 14:49:25 USG pppd[8094]: pppd 2.4.4 started by root, uid 0
Oct 29 14:49:25 USG pppd[8094]: Failed to create PPPoE socket: Protocol not supported
Oct 29 14:49:37 USG xl2tpd[8208]: setsockopt recvref[30]: Protocol not available

Then I realize it’s a driver issue. Looks like USG won’t load PPPOE driver without a restart. So if you are using DHCP in the past, after you change to PPPOE, you need to restart your USG.

After restart USG, all good.

Windows shown as “No internet” when it can access internet

Windows is running DNS and HTTP test against www.msftconnecttest.com  to check if it has internet connection or not. So if your internet can’t access this website, for example, in China, sometimes this domain is hijacking by GFW, then windows will show as no internet connect.

A quick fix is to disable Active Probe via modify registry.

Change below value from 1 to 0 to disable Active Probe

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NlaSvc\Parameters\Internet 的 EnableActiveProbing