EVPN MAC Advertisement route not installed to L2 forwarding table

Question

I have a VLAN-based EVPN connecting two sites in a lab environment based on the network topology described in the DAY ONE: USING ETHERNET VPNS FOR DATA CENTER INTERCONNECT book:

For some reason, it looks like the MAC Advertisement routes from remote PEs are not installed to mac-table of the local PE. For example, there is a route for MAC address fe:86:dd:0e:ff:f3 in EVPN-1.evpn.0 table:

2:11.11.11.11:1::100::fe:86:dd:0e:ff:f3/304 MAC/IP (1 entry, 1 announced)
        *BGP    Preference: 170/-101
                Route Distinguisher: 11.11.11.11:1
                Next hop type: Indirect, Next hop index: 0
                Address: 0xcf04ff0
                Next-hop reference count: 35
                Source: 1.1.1.1
                Protocol next hop: 11.11.11.11
                Indirect next hop: 0x2 no-forward INH Session ID: 0x0
                State: <Secondary Active Int Ext>
                Local AS: 65000 Peer AS: 65000
                Age: 15:11:12   Metric2: 2
                Validation State: unverified
                Task: BGP_65000.1.1.1.1+179
                Announcement bits (1): 0-EVPN-1-evpn
                AS path: I  (Originator)
                Cluster list:  1.1.1.1
                Originator ID: 11.11.11.11
                Communities: target:65000:1
                Import Accepted
                Route Label: 299888
                ESI: 00:11:11:11:11:11:11:11:11:11
                Localpref: 100
                Router ID: 1.1.1.1
                Primary Routing Table bgp.evpn.0
                Indirect next hops: 1
                        Protocol next hop: 11.11.11.11 Metric: 2
                        Indirect next hop: 0x2 no-forward INH Session ID: 0x0
                        Indirect path forwarding next hops: 1
                                Next hop type: Router
                                Next hop: 10.21.1.1 via ge-0/0/5.0
                                Session Id: 0x0
                                11.11.11.11/32 Originating RIB: inet.3
                                  Metric: 2     Node path count: 1
                                  Forwarding nexthops: 1
                                        Nexthop: 10.21.1.1 via ge-0/0/5.0
                                        Session Id: 0

I would expect to see the MAC address of fe:86:dd:0e:ff:f3 in the local PE mac-table with a flag R(Remote PE MAC) set, but it is not there:

root@PE21> show evpn mac-table

MAC flags       (S -static MAC, D -dynamic MAC, L -locally learned, C -Control MAC
    O -OVSDB MAC, SE -Statistics enabled, NM -Non configured MAC, R -Remote PE MAC, P -Pinned MAC)

Routing instance : EVPN-1
 Bridging domain : __EVPN-1__, VLAN : 100
   MAC                 MAC      Logical          NH     MAC         active
   address             flags    interface        Index  property    source
   fe:96:dd:0e:ff:f4   D        ae0.100

root@PE21>

EVPN configuration on local PE(PE21) and remote PE(PE11) can be seen below:

root@PE21> show configuration routing-instances EVPN-1
instance-type evpn;
vlan-id 100;
interface ae0.100;
routing-interface irb.100;
route-distinguisher 21.21.21.21:1;
vrf-target target:65000:1;
protocols {
    evpn {
        default-gateway do-not-advertise;
    }
}

root@PE21>


root@PE11> show configuration routing-instances EVPN-1
instance-type evpn;
vlan-id 100;
interface ae0.100;
routing-interface irb.100;
route-distinguisher 11.11.11.11:1;
vrf-target target:65000:1;
protocols {
    evpn {
        default-gateway do-not-advertise;
    }
}

root@PE11>

Local CE port configuration is following:

root@CE20> show configuration interfaces ae0
aggregated-ether-options {
    lacp {
        active;
        periodic fast;
    }
}
unit 0 {
    family bridge {
        interface-mode trunk;
        vlan-id-list [ 100 200 201 202 222 ];
    }
}

root@CE20>

What might cause such behavior?