DNSforwarder & Carp
IP LAN: x.x.x.1
IP LAN CARP VIP: x.x.x.3
Binding dnsforwarder to LAN .1 works.
To CARP .3 works.
To LAN .1 & CARP .3 works only on LAN. No matter if strict binding or not.
Upd: Setting to all interfaces works on all interfaces, so just selective binding seems to be a problem