Prevent setting a load-balance gateway group as default.
Currently it's possible to set a load-balance gateway group as the system default gateway in System > Routing > Gateways.
That is an invalid setting though, only individual gateways or failover groups are valid there.
It would be nice for the input validation to prevent that but that would mean code to categorise gateway groups. That could get complex quickly.
Failing that a note on that page such as changing the text to:
Select a gateway or failover gatewaygroup to use as the default gateway.
#1 Updated by Steve Wheeler 5 months ago
Reviewing it appears the intended behaviour here is that a load-balance group can be selected but behaves as a failover group with whichever gateway is first acrting as the higher tier. Importantly it cannot actually load-balance.
So a note to that effect on the page would probably suffice here.