Ah, I see. It sounds like it's more a function of how long it takes the PPPoE auth than the actual UTM failover. Have you tried shutting down your primary UTM VM? I'm curious if your internet connection would remain down until the primary UTM VM is back up or if after the ~30 second wait, your failover UTM would assume primary function. If after shutting down your primary, you don't regain internet connectivity at all unless you restart the primary UTM then there's is something not working properly with the setup, otherwise I think you're at the mercy of your ISP's authentication speed. Another option is if this is a paid UTM license, you could try enabling active/active HA instead of active/passive. In active/active both UTMs would be providing connectivity and in the event of a failover, the second UTM should simply take over immediately since it has already authenticated with your ISP.
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