For future reference, in case someone runs into issues with TPG ISP and RUT950 specifically, this is the solution (as of the date of this post):
Note: access to the router via command-line interface (CLI) is required to perform the following action! Please refer to our wiki page for additional reference regarding how to login to the router via CLI
uci add network device
uci set network.@device[-1].name='taggedWAN'
uci set network.@device[-1].type='8021q'
uci set network.@device[-1].ifname='eth1'
uci set network.@device[-1].vid='2'
uci set network.wan.proto='pppoe'
uci set network.wan.mtu='1480'
uci set network.wan.username='PPPOE_USERNAME'
uci set network.wan.password='PPPOE_PASSWORD'
uci set network.wan.ipv6='auto'
uci add_list network.wan.dns='DNS_server_#1'
uci add_list network.wan.dns='DNS_server_#2'
uci set network.wan.ifname='taggedWAN'
uci set network.wan6.disabled='1'
uci commit && reload_config
These commands will do the following:
1. Create a 802.1Q VLAN with ID (tag) 2, and set eth1 (WAN port) as the parent interface
2. Set WAN interface to PPPoE protocol with all the correct settings: MTU, protocol, username & password (make sure to modify values in their respective lines!), DNS servers (make sure to edit these lines as well before applying configuration on your router!), VLAN interface
3. Disable WAN6 interface to make sure it doesn't interfere with the process
Best regards,
Tomas.