TUF AX5400 Can't get Dual Wan to work

[juliovedovatto]

(I acknowledge Merlin doesn't touch the Dual Wan Code, but I would like to ask if someone could assist me with my problem)

I'm facing a situation w/ my brand new TUF-AX5400 w/ Dual Wan setup using the latest firmware.

Background: I have two ISP set in my home, one as primary access and other as fallback. Right now I need to connect to each one ISP Modem WLAN to be able to use it.

One of the reasons I decided to buy a new router is to be able to perform Dual Wan setup, so I don't worry about which connection I'm using for work or play.

What I did:

I followed the instructions to set both WAN types (both Automatic DHCP). But the Ethernet LAN is not able to communicate w/ my ISP modem to retrieve a valid DNS address.

• Both ends are w/ lights on
• I changed LAN cables
• restarted everything
• tried to use different LAN ports
• power cycling and even factory reset.
• My ISP modem shows there there is connection (led on), but the AX5400 is not able to request DHCP address.
• I switched primary and secondary WAN the one connected in WAN port works as expected.

The problem is just w/ the Ethernet LAN. It shows the following message: Your ISP’s DHCP Does Not Function Properly

Current config for the Secondary WAN:

WAN Port LAN4

Dual WAN Mode Fail Over

Connection type Automatic IP

Nvram config:

wan0_6rd_prefix=
wan0_6rd_prefixlen=
wan0_6rd_router=
wan0_auth_x=
wan0_auxstate_t=0
wan0_clientid=
wan0_clientid_type=0
wan0_desc=
wan0_dhcp_qry=1
wan0_dhcpenable_x=1
wan0_dns=1.1.1.1 1.0.0.1
wan0_dns1_x=1.1.1.1
wan0_dns2_x=1.0.0.1
wan0_dnsenable_x=0
wan0_enable=1
wan0_expires=2592203
wan0_gateway=192.168.100.1
wan0_gateway_x=0.0.0.0
wan0_gw_ifname=eth4
wan0_gw_mac=[redacted]
wan0_heartbeat_x=
wan0_hostname=
wan0_hwaddr=[redacted]
wan0_hwaddr_x=
wan0_hwname=
wan0_ifname=eth4
wan0_ipaddr=192.168.100.2
wan0_ipaddr_x=0.0.0.0
wan0_is_usb_modem_ready=0
wan0_lease=2592000
wan0_mroute=
wan0_mtu=
wan0_nat_x=1
wan0_netmask=255.255.255.0
wan0_netmask_x=0.0.0.0
wan0_phytype=
wan0_ppp_echo=0
wan0_ppp_echo_failure=10
wan0_ppp_echo_interval=6
wan0_pppoe_ac=
wan0_pppoe_auth=
wan0_pppoe_hostuniq=
wan0_pppoe_idletime=0
wan0_pppoe_ifname=
wan0_pppoe_mru=1492
wan0_pppoe_mtu=1492
wan0_pppoe_options_x=
wan0_pppoe_passwd=
wan0_pppoe_relay=0
wan0_pppoe_service=
wan0_pppoe_username=
wan0_pptp_options_x=
wan0_primary=1
wan0_proto=dhcp
wan0_proto_t=dhcp
wan0_realip_ip=[redacted]
wan0_realip_state=2
wan0_route=
wan0_s46_ealen_x=0
wan0_s46_hgw_case=0
wan0_s46_offset_x=6
wan0_s46_peer_x=
wan0_s46_prefix4_x=
wan0_s46_prefix4len_x=0
wan0_s46_prefix6_x=
wan0_s46_prefix6len_x=0
wan0_s46_psid_x=0
wan0_s46_psidlen_x=0
wan0_sbstate_t=0
wan0_state_t=2
wan0_unit=0
wan0_upnp_enable=1
wan0_vendorid=
wan0_vpndhcp=1
wan0_wins=
wan0_xgateway=192.168.100.1
wan0_xipaddr=0.0.0.0
wan0_xnetmask=0.0.0.0
wan1_6rd_ip4size=
wan1_6rd_prefix=
wan1_6rd_prefixlen=
wan1_6rd_router=
wan1_auth_x=
wan1_auxstate_t=0
wan1_clientid=
wan1_clientid_type=0
wan1_desc=
wan1_dhcp_qry=1
wan1_dhcpenable_x=1
wan1_dns=1.1.1.1 1.0.0.1
wan1_dns1_x=1.1.1.1
wan1_dns2_x=1.0.0.1
wan1_dnsenable_x=1
wan1_enable=1
wan1_expires=56
wan1_gateway=0.0.0.0
wan1_gateway_x=0.0.0.0
wan1_gw_ifname=eth0
wan1_gw_mac=
wan1_heartbeat_x=
wan1_hostname=
wan1_hwaddr=[redacted]
wan1_hwaddr_x=
wan1_hwname=
wan1_ifname=eth0
wan1_ipaddr=0.0.0.0
wan1_ipaddr_x=0.0.0.0
wan1_is_usb_modem_ready=0
wan1_mroute=
wan1_mtu=
wan1_nat_x=1
wan1_netmask=0.0.0.0
wan1_netmask_x=0.0.0.0
wan1_phytype=
wan1_ppp_echo=0
wan1_ppp_echo_failure=10
wan1_ppp_echo_interval=6
wan1_pppoe_ac=
wan1_pppoe_auth=
wan1_pppoe_hostuniq=
wan1_pppoe_idletime=0
wan1_pppoe_ifname=
wan1_pppoe_mru=1492
wan1_pppoe_mtu=1492
wan1_pppoe_options_x=
wan1_pppoe_passwd=
wan1_pppoe_relay=0
wan1_pppoe_service=
wan1_pppoe_username=
wan1_pptp_options_x=
wan1_primary=0
wan1_proto=dhcp
wan1_proto_t=dhcp
wan1_realip_ip=
wan1_realip_state=0
wan1_route=
wan1_s46_ealen_x=0
wan1_s46_hgw_case=0
wan1_s46_offset_x=6
wan1_s46_peer_x=
wan1_s46_prefix4_x=
wan1_s46_prefix4len_x=0
wan1_s46_prefix6_x=
wan1_s46_prefix6len_x=0
wan1_s46_psid_x=0
wan1_s46_psidlen_x=0
wan1_sbstate_t=3
wan1_state_t=4
wan1_unit=1
wan1_upnp_enable=1
wan1_vendorid=
wan1_vpndhcp=1
wan1_wins=
wan1_xgateway=0.0.0.0
wan1_xipaddr=0.0.0.0
wan1_xnetmask=0.0.0.0
wan46det_proceeding=0
wan_auth_x=
wan_clientid=
wan_clientid_type=0
wan_desc=
wan_dhcp_qry=1
wan_dhcpenable_x=1
wan_dns=1.1.1.1 1.0.0.1
wan_dns1_x=1.1.1.1
wan_dns2_x=1.0.0.1
wan_dnsenable_x=0
wan_enable=1
wan_gateway=0.0.0.0
wan_gateway_x=0.0.0.0
wan_gw_mac=[redacted]
wan_heartbeat_x=
wan_hostname=
wan_hwaddr=[redacted]
wan_hwaddr_x=
wan_hwname=
wan_ifname=eth4
wan_ifnames=eth4 eth0
wan_ipaddr=0.0.0.0
wan_ipaddr_x=0.0.0.0
wan_mtu=
wan_nat_x=1
wan_netmask_x=0.0.0.0
wan_phytype=
wan_ppp_echo=0
wan_ppp_echo_failure=10
wan_ppp_echo_interval=6
wan_pppoe_ac=
wan_pppoe_auth=
wan_pppoe_hostuniq=
wan_pppoe_idletime=0
wan_pppoe_mru=1492
wan_pppoe_mtu=1492
wan_pppoe_options_x=
wan_pppoe_passwd=
wan_pppoe_relay=0
wan_pppoe_service=
wan_pppoe_username=
wan_pptp_options_x=
wan_primary=0
wan_proto=dhcp
wan_s46_ealen_x=0
wan_s46_offset_x=6
wan_s46_peer_x=
wan_s46_prefix4_x=
wan_s46_prefix4len_x=0
wan_s46_prefix6_x=
wan_s46_prefix6len_x=0
wan_s46_psid_x=0
wan_s46_psidlen_x=0
wan_unit=0
wan_upnp_enable=1
wan_vendorid=
wan_vpndhcp=1
wan_wins=
wandog_delay=0
wandog_enable=1
wandog_fb_count=4
wandog_fb_restart=0
wandog_interval=3
wandog_maxfail=5
wandog_target=www.google.com
wanduck_start_detect=1
wanports=4 0
wans_cap=wan usb lan
wans_dualwan=wan lan
wans_lanport=4
wans_lb_ratio=3:1
wans_mode=fb
wans_routing_enable=0
wans_standby=1
wans_usb_bk=1
wans_usb_bk_act=0
wans_routing_rulelist=