Hi everyone, I'm trying to setup prefix-list using the "ge" qualifier. TLDR: I feel like there is an off by one error somewhere :) I have setup 2 frr (r1 and r2) with the following configs: hostname bgpd1 password zebra !enable password please-set-at-here ! !bgp mulitple-instance ! router bgp 7675 bgp router-id 10.0.0.10 neighbor 10.0.0.11 remote-as 7676 ! address-family ipv4 unicast neighbor 10.0.0.11 prefix-list mylist out exit-address-family ! ip prefix-list mylist seq 5 permit 192.168.0.0/16 ip prefix-list mylist seq 6 permit 192.168.0.0/16 ge 24 ! log stdout and hostname bgpd2 password zebra !enable password please-set-at-here ! !bgp mulitple-instance ! router bgp 7676 bgp router-id 10.0.0.11 neighbor 10.0.0.10 remote-as 7675 ! log stdout When I try to advertise a /24 with frr, the route never reaches r2. On the other hand, when I try with quagga, the route reaches r2: Network Next Hop Metric LocPrf Weight Path *> 192.168.0.0/16 10.0.0.10 0 0 7675 i *> 192.168.10.0/24 10.0.0.10 0 0 7675 i Tested frr version: FRRouting 6.1-dev_git1042702486119 (5428d11f96b4). Tested quagga version: 1.1.0 Am I missing something? More news on that topic on monday. Have a nice weekend! -- François