I tried to make the subject all the key details. I have a successful MX85 to TZ VPN connection on my primary ISP. The HA failover VPN works because I set up a VIP for the redundant MX85's. However, when I fail test the ISP, the internet is accessible, but the tunnels never re-establish over the VPN. I have the 2nd IPSEC on the other end set to what becomes the new Public IP on the MX85 backup. I waited a good 10-15 minutes to see if the tunnel would ever re-connect. No joy. I am sure there is some fundamental step I am missing, but it eludes me. Reading is fundamental, but apparently firewalls are not.
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