Hi guys, I'm new in this forum so first of all, hello to everyone.

My problem is that I have a 2820 with 2 WANs enabled, WAN1 is ADSL with Jazztel (I live in Spain) and WAN2 is Ethernet-connected to another ISP. Both of the WANs have Static IP.

I've configured a Dynamic DNS in DynDNS, and I've configured the first dynamic dns account in the 2820 with that parameters. The fiels "WAN Interface" is set to "WAN2 First" so, when the dynamic dns client checks the IPs, first checks WAN2 and, if it is enabled, assigns WAN2 Public IP to the dyndns account. If WAN2 is down, then checks WAN1 and if it is enabled, assigns WAN1 Public IP to the dyndns account.

But the problem is that the 2 WAN Interfaces (WAN1 and WAN2) are enabled, traffic goes out by the two WANs, but the dyndns account is always the WAN1 Public IP, instead of WAN2 Public IP.

What is the problem? (I'm getting crazy looking for a solution)

Thank you all for tour cooperation