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hi community,</div>
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I got some confused of ospf lsa3.</div>
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topology:</div>
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r1 --a12-- r2 --a0-- r3 --a34-- r4</div>
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| |</div>
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+---a23 ---+</div>
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r1(intf:r1r2) and r2(intf:r2r1) are belong to area 12, ptp network: 10.0.12.0/30</div>
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r2(intf:r20r30) and r3(intf:r30r20) are composed to area 0, ptp network: 10.0.100.0/30</div>
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r2(intf:r2r3) and r3(intf:r3r2) are composed to area 0, ptp network: 10.0.23.0/30</div>
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r3(intf:r3r4) and r4(intf:r4r3) are cmposed to area 34, ptp network: 10.0.34.0/30</div>
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r1 has a stub net: 10.1.1.0/30</div>
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r4 has a stub net: 10.4.2.0/30</div>
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why r2/r3 regenerated lsa3 and advertise on area 23, isn't it prohibited ABR to flood lsa3 to non-backbone area?</div>
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r2</div>
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```</div>
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bird> s o l type 3 area 23</div>
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Area 0.0.0.23</div>
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Type LS ID Router Sequence Age Checksum</div>
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0003 10.0.12.3 10.0.0.2 80000004 1088 6885</div>
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0003 10.0.34.3 10.0.0.2 80000004 1064 d9f3</div>
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0003 10.0.100.3 10.0.0.2 80000004 1088 9cf8</div>
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0003 10.1.1.3 10.0.0.2 80000004 1070 3ab3</div>
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0003 10.4.2.3 10.0.0.2 80000004 1060 6f70</div>
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0003 10.0.12.3 10.0.0.3 80000004 1063 c61c</div>
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0003 10.0.34.3 10.0.0.3 80000004 1069 6f67</div>
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0003 10.0.100.3 10.0.0.3 80000004 1069 96fd</div>
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0003 10.1.1.3 10.0.0.3 80000004 1063 984a</div>
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0003 10.4.2.3 10.0.0.3 80000004 1062 05e3</div>
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```</div>
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