Re: how to import dhcp (default-)route into other routing-table ?

Instance-import works for me :

regress@cspsol16-vsrx# run show route table wan0

wan0.inet.0: 5 destinations, 8 routes (5 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

0.0.0.0/0          *[Static/5] 00:10:24
                    > to 14.1.1.2 via ge-0/0/2.0
                    [Access-internal/12] 00:00:04
                    > to 66.1.1.1 via ge-0/0/3.0

regress@cspsol16-vsrx# show policy-options policy-statement access
term 1 {
    from {
        instance wan1;
        protocol access-internal;
        route-filter 0.0.0.0/0 exact;
    }
    then accept;
}