Single WAN: CARP/HA possible?

[phoenix]

I only have a single WAN connection, is it possible to configure an HA solution with this set-up? I have seen an article about this using pfsense on a French blog here: https://voiprovider.wordpress.com/2017/03/26/la-ha-avec-pfsense-et-1-seule-ip-wan/  would this work in OPNsense?

[mimugmail]

Is it a static IP or dialup?

[phoenix]

Is it a static IP or dialup?

Sorry, I forgot to mention that - it's a static FTTH connection.

[mimugmail]

Try to set the WAN IP address to something like 10.255.255.1 and 2, then create a CARP VIP with the real IP, add a gateway with the real gateway address and check "Far gateway".

Could/Should work.

[phoenix]

I'll give that a go in a short while, I'm in the middle of rewiring part of the house for my LAN. :) Do I need a VLAN for the inbound WAN connection through a switch and then two (VLAN) connections to both of the OPNsense servers?

[finish06]

Did this work?

[iMx]

Works for me - as suggested here.