still same topology used as previous posts. Added GRE tunnel in the topology with two new OSPF areas.
version 10.4R3.4;
system {
  backup-router 10.50.2.1;
  root-authentication {
    encrypted-password "$1$MsDQp3dk$uxdtlK7LKSqp4mHjg/zxZ1"; ## SECRET-DATA
  }
  login {
    user test {
      uid 2000;
      class super-user;
      authentication {
        encrypted-password "$1$XKhC35Ei$9ED4o245Ts.jyQ2BqeeQR/"; ## SECRET-DATA
      }
    }
  }
  services {
    ftp;
    telnet;
    web-management {
      http {
        port 80;
      }
    }
  }
  syslog {
    user * {
      any emergency;
    }
    file messages {
      any notice;
      authorization info;
    }
    file interactive-commands {
      interactive-commands any;
    }
  }
}
logical-systems {
  r1 {
    interfaces {
      em1 {
        unit 13 {
          vlan-id 13;
          family inet {
            address 10.1.13.1/24;
          }
        }
        unit 15 {
          vlan-id 15;
          family inet {
            address 10.1.15.1/24;
          }
        }
      }
      gre {
        unit 1 {
          description "GRE Tunnel";
          tunnel {
            source 10.1.13.1;
            destination 10.1.13.3;
          }
          family inet {
            address 10.254.0.1/30;
          }
        }
      }
      lo0 {
        unit 1 {
          family inet {
            address 10.1.1.1/32;
          }
        }
      }
    }
    protocols {
      ospf {
        area 0.0.0.0 {
          interface lo0.1;
          inactive: interface em1.13;
          interface em1.15;
          interface gre.1;
        }
      }
    }
    routing-options {
      router-id 10.10.1.1;
    }
  }
  r2 {
    interfaces {
      em2 {
        unit 24 {
          vlan-id 24;
          family inet {
            address 10.1.24.2/24;
          }
        }
        unit 25 {
          vlan-id 25;
          family inet {
            address 10.1.25.2/24;
          }
        }
      }
      gre {
        unit 3 {
          tunnel {
            source 10.1.24.2;
            destination 10.1.24.4;
          }
          family inet {
            address 10.253.0.1/30;
          }
        }
      }
      lo0 {
        unit 2 {
          family inet {
            address 10.1.1.2/32;
          }
        }
      }
    }
    protocols {
      ospf {
        area 0.0.0.0 {
          interface em2.25;
          interface lo0.2;
          interface gre.3;
        }
      }
    }
    routing-options {
      router-id 10.1.1.2;
    }
  }
  r3 {
    interfaces {
      em3 {
        unit 13 {       Â
          vlan-id 13;
          family inet {
            address 10.1.13.3/24;
          }
        }
        unit 36 {
          vlan-id 36;
          family inet {
            address 10.1.36.3/24;
          }
        }
      }
      gre {
        unit 2 {
          tunnel {
            source 10.1.13.3;
            destination 10.1.13.1;
          }
          family inet {
            address 10.254.0.2/30;
          }
        }
      }
      lo0 {
        unit 3 {
          family inet {
            address 10.1.1.3/32;
          }
        }
      }
    }
    protocols {
      ospf {
        area 0.0.0.0 {
          inactive: interface em3.13;
          interface em3.36;
          interface lo0.3;
          interface gre.2;
        }
      }
    }
    routing-options {
      router-id 10.1.1.3;
    }
  }
  r4 {
    interfaces {
      em4 {
        unit 24 {
          vlan-id 24;
          family inet {
            address 10.1.24.4/24;
          }
        }
        unit 46 {
          vlan-id 46;
          family inet {
            address 10.1.46.4/24;
          }
        }
      }
      gre {
        unit 4 {
          tunnel {
            source 10.1.24.4;
            destination 10.1.24.2;
          }
          family inet {
            address 10.253.0.2/30;
          }         Â
        }
      }
      lo0 {
        unit 4 {
          family inet {
            address 10.1.1.4/32;
          }
        }
      }
    }
    protocols {
      ospf {
        area 0.0.0.0 {
          interface em4.46;
          interface lo0.4;
          interface gre.4;
        }
      }
    }
    routing-options {
      router-id 10.1.1.4;
    }
  }
  r5 {
    interfaces {
      em5 {
        unit 15 {
          vlan-id 15;
          family inet {
            address 10.1.15.5/24;
          }
        }
        unit 25 {
          vlan-id 25;
          family inet {
            address 10.1.25.5/24;
          }
        }
      }
      lo0 {
        unit 5 {
          family inet {
            address 10.1.1.5/32;
          }
        }
      }
    }
    protocols {
      ospf {
        export ex_filter_routes_5;
        area 0.0.0.0 {
          interface em5.15;
          interface em5.25;
        }
        area 0.0.0.10 {
          interface lo0.5;
        }
      }
    }
    policy-options {
      policy-statement ex_filter_routes_5 {
        from {
          route-filter 10.1.1.5/32 exact;
        }
        then accept;
      }
    }
    routing-options {
      router-id 10.1.1.5;
    }               Â
  }
  r6 {
    interfaces {
      em6 {
        unit 36 {
          vlan-id 36;
          family inet {
            address 10.1.36.6/24;
          }
        }
        unit 46 {
          vlan-id 46;
          family inet {
            address 10.1.46.6/24;
          }
        }
      }
      lo0 {
        unit 6 {
          family inet {
            address 10.1.1.6/32;
          }
        }
      }
    }
    protocols {
      ospf {
        area 0.0.0.0 {
          interface em6.36;
          interface em6.46;
        }
        area 0.0.0.20 {
          interface lo0.6;
        }
      }
    }
    routing-options {
      router-id 10.1.1.6;
    }
  }
}
interfaces {
  em0 {
    unit 0 {
      family inet {
        address 10.50.2.230/24;
      }
    }
  }
  em1 {
    vlan-tagging;
  }
  em2 {
    vlan-tagging;
  }
  em3 {
    vlan-tagging;
  }
  em4 {
    vlan-tagging;
  }
  em5 {
    vlan-tagging;
  }
  em6 {
    vlan-tagging;
  }
}
routing-options {
  static {             Â
    route 0.0.0.0/0 {
      next-hop 10.50.2.1;
      retain;
      no-readvertise;
    }
  }
}
------------------------------------------
test# run show route logical-system r5Â
inet.0: 15 destinations, 15 routes (15 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
10.1.1.1/32 Â Â Â Â *[OSPF/10] 00:01:12, metric 1
          > to 10.1.15.1 via em5.15
10.1.1.2/32 Â Â Â Â *[OSPF/10] 00:01:16, metric 1
          > to 10.1.25.2 via em5.25
10.1.1.3/32 Â Â Â Â *[OSPF/10] 00:01:12, metric 2
          > to 10.1.15.1 via em5.15
10.1.1.4/32 Â Â Â Â *[OSPF/10] 00:01:16, metric 2
          > to 10.1.25.2 via em5.25
10.1.1.5/32 Â Â Â Â *[Direct/0] 00:12:06
          > via lo0.5
10.1.1.6/32 Â Â Â Â *[OSPF/10] 00:01:11, metric 3
          > to 10.1.15.1 via em5.15
           to 10.1.25.2 via em5.25
10.1.15.0/24 Â Â Â *[Direct/0] 00:01:57
          > via em5.15
10.1.15.5/32 Â Â Â *[Local/0] 00:01:57
           Local via em5.15
10.1.25.0/24 Â Â Â *[Direct/0] 00:01:57
          > via em5.25
10.1.25.5/32 Â Â Â *[Local/0] 00:01:57
           Local via em5.25
10.1.36.0/24 Â Â Â *[OSPF/10] 00:01:12, metric 3
          > to 10.1.15.1 via em5.15
10.1.46.0/24 Â Â Â *[OSPF/10] 00:01:16, metric 3
          > to 10.1.25.2 via em5.25
10.253.0.0/30 Â Â Â *[OSPF/10] 00:01:16, metric 2
          > to 10.1.25.2 via em5.25
10.254.0.0/30 Â Â Â *[OSPF/10] 00:01:12, metric 2
          > to 10.1.15.1 via em5.15
224.0.0.5/32 Â Â Â *[OSPF/10] 00:12:08, metric 1
           MultiRecv
[edit]
test#
test# run show ospf neighbor logical-system r1Â
Address      Interface        State   ID        Pri  Dead
10.1.15.5     em1.15         Full    10.1.1.5     128   35
10.254.0.2    gre.1          Full    10.1.1.3     128   34
[edit]
test# run show ospf neighbor logical-system r2 Â Â
Address      Interface        State   ID        Pri  Dead
10.1.25.5     em2.25         Full    10.1.1.5     128   34
10.253.0.2    gre.3          Full    10.1.1.4     128   38
[edit]
test#
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