Dynamic DNS service causes gateway's downtime

[CS]

Hi all!

I have noticed that every time the Dynamic DNS service is checking the IP in order to update the hostname is causes a short downtime of the WAN Gateway and all the clients are losing their internet connectivity. When that happens, the first entry in the system logs is the following:

check_reload_status: updating dyndns WAN_GATEWAY

The same entries are repeated three times, which means the same check by the Dynamic DNS service is done 3 times, one after the other.

Do you know any way I could fix it? I need the DynDNS service, but this is annoying and I think it shouldn't happen at all.
By the way PPPoE is used for the WAN interface and the gateway has a public IP assigned by the ISP.

[CS]

No ideas?!