parser problem in range map?

[Andreas Schultz <andreas.schultz@travelping.com>]

The following simple ruleset fails to load on nftables 0.9.8 (from
Ubuntu 21.04):

#!/usr/sbin/nft -f

flush ruleset

table inet nat {
    chain prerouting {
        type filter hook prerouting priority -100;
        ip daddr set numgen inc mod 16 map { 0 - 7 : 10.0.1.1, 8 - 15
: 10.0.1.2 }
    }

    chain postrouting {
        type filter hook postrouting priority 100;
    }
}

It throws this error:

# nft -f test.nft
test.nft:12:40-42: Error: Value 100 exceeds valid range 0-15
type filter hook postrouting priority 100;
                                      ^^^
test.nft:12:31-42: Error: invalid priority expression value in this context.
type filter hook postrouting priority 100;
                             ^^^^^^^^^^^^

Is there something wrong with my expression or is this a bug?

Regards,
Andreas

-- 
Andreas Schultz