Asus GT-AC9600 User Manual page 17

2. The wireless router automatically detects if your ISP
connection type is Dynamic IP, PPPoE, PPTP and L2TP. Key
in the necessary information for your ISP connection type.
IMPORTANT! Obtain the necessary information from your ISP about the
Internet connection type.
for Automatic IP (DHCP)
for PPPoE, PPTP and L2TP
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