I don't see why logically this wouldn't work, but I was wondering if anyone knows for sure before we take the plunge and order the kit (2 x MX84 with a planned HA setup).   We have 2 Internet connections. 1 is an fibre Ethernet leased line service a /29 public subnet, and we have sufficient (2) unused IP addresses from the /29, which we can use up for a HA / warm-spare setup   The other is an ADSL / PPPoA connection with 1 dynamic IP address (and no realistic option to change this in the short term).   What we're thinking about for the ADSL / PPPoA connection, is (because we don't really care about inbound traffic / port forwarding from WAN to LAN):   PPPoA router WAN interface - gets dynamic public IP address from ISP PPPoA LAN inteface (has a 4-port Ethernet switch built-in) - something like 192.168.1.254/24. Connect "Internet 2" on each of my MX84 units to ports on this.   Each MX84 is statically assigned a private IP address from the (e.g. 192.168.1.10 and 192.168.1.11) and the virtual IP can be 192.168.1.1   Will that be enough for the HA connectivity to work?   Thanks for your help in advance.     ... View more