I don't follow pfsense too much but my understanding is OPNsense typically brings in package updates faster as they have a more frequent update cycle. I can't speak too much to bugs as I haven't migrated to Kea but imo some core functionality wasn't there until recently. And Dnsmasq seems like a better fit for me anyway, which is where I'll migrate to.
From the 25.1.6 OPNsense May update notes:
> Last but not least: Kea DHCPv6 is here. And with it full DHCP and router advertisement support in Dnsmasq to bridge the gap for ISC users who do not need or want Kea. We are going to make Dnsmasq DHCP the default in new installations starting with 25.7, too. ISC DHCP will still be around as a core component in 25.7 but likely moves to plugins for 26.1 next year.
I've been using it on opnsense since the first version it was released in. I aggressively switched because wanted to ditch my weird setup to do multi subnets (forwarding though a l3 switch). Haven't had any issues.
I don't follow pfsense too much but my understanding is OPNsense typically brings in package updates faster as they have a more frequent update cycle. I can't speak too much to bugs as I haven't migrated to Kea but imo some core functionality wasn't there until recently. And Dnsmasq seems like a better fit for me anyway, which is where I'll migrate to.
From the 25.1.6 OPNsense May update notes:
> Last but not least: Kea DHCPv6 is here. And with it full DHCP and router advertisement support in Dnsmasq to bridge the gap for ISC users who do not need or want Kea. We are going to make Dnsmasq DHCP the default in new installations starting with 25.7, too. ISC DHCP will still be around as a core component in 25.7 but likely moves to plugins for 26.1 next year.
https://docs.opnsense.org/releases/CE_25.1.html#may-08-2025
I've been using it on opnsense since the first version it was released in. I aggressively switched because wanted to ditch my weird setup to do multi subnets (forwarding though a l3 switch). Haven't had any issues.