pfblockerNG slows network traffic and I get an error

[rajbps]

When I enable pfblockerNG on the firewall, i get the following errors:
There were error(s) loading the rules: /tmp/rules.debug:177: could not parse host specification - The line in question reads [177]: rdr pass on em2 inet6 proto tcp from any to ::1010101 port 80 -> ::1 port 8081

The traffic also becomes very very slow. As soon as I disable pfblockerNG it goes back to normal. Can someone please help me please?

pf version: 2.5.2