[nullindividual]

It's hard to criticize low cost solutions like this; if they work, they work! If there was slightly more control over the network infrastructure, I'd choose to go with CARP as my failover mechanism. It is probably one of the best OpenBSD features.

[toast0]

CARP is nice[1], but you need to have two machines on a broadcast domain for that. That doesn't give you geo-redundancy, like this solution does.

[1] I use it with FreeBSD to have redundant internet routers.