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Outgoing route running circles?
No idea what is going on here but doing an mtr from singapore to europe i see this circular circle (and by that, packets never reaching the dest):
core.rc.sg.hostuniversal.com.au 0.0% 51 0.2 0.3 0.2 1.1 0.1
3. core.sg3.sg.hostuniversal.com.au 0.0% 51 1.1 1.1 1.0 1.2 0.0
4. core.rc.sg.hostuniversal.com.au 0.0% 50 1.2 1.2 1.0 1.6 0.1
5. core.sg3.sg.hostuniversal.com.au 0.0% 50 1.9 1.9 1.7 2.0 0.0
6. core.rc.sg.hostuniversal.com.au 0.0% 50 1.7 1.9 1.7 2.0 0.1
7. core.sg3.sg.hostuniversal.com.au 0.0% 50 2.4 2.6 2.4 2.7 0.1
8. core.rc.sg.hostuniversal.com.au 0.0% 50 2.6 2.7 2.4 4.2 0.4
9. core.sg3.sg.hostuniversal.com.au 0.0% 50 3.3 3.3 3.1 3.4 0.1
10. core.rc.sg.hostuniversal.com.au 0.0% 50 3.3 3.3 3.2 3.4 0.1
11. core.sg3.sg.hostuniversal.com.au 0.0% 50 4.1 4.1 3.9 4.2 0.1
12. core.rc.sg.hostuniversal.com.au 0.0% 50 4.1 4.1 3.9 4.6 0.1
13. core.sg3.sg.hostuniversal.com.au 0.0% 50 4.8 4.8 4.6 4.9 0.1
14. core.rc.sg.hostuniversal.com.au 0.0% 50 4.8 4.8 4.6 5.3 0.1
15. core.sg3.sg.hostuniversal.com.au 0.0% 50 5.7 5.6 5.4 5.7 0.15.4 10.1 0.7
17. core.sg3.sg.hostuniversal.com.au 0.0% 50 6.3 6.3 6.1 6.4 0.1
18. core.rc.sg.hostuniversal.com.au 0.0% 50 6.3 6.3 6.1 7.0 0.1
19. core.sg3.sg.hostuniversal.com.au 0.0% 50 7.0 7.0 6.8 7.2 0.1
20. core.rc.sg.hostuniversal.com.au 0.0% 50 7.0 7.0 6.8 7.2 0.1
21. core.sg3.sg.hostuniversal.com.au 0.0% 50 7.6 7.8 7.6 7.9 0.1
etc. pp.
This does not look the way it is supposed to be.
This seems to affect only a small range of an asn that I try to reach as destination, other ranges in that destination asn are reachable normally.
Comments
Talk with your ISP or who configured your BGP in routers. This is a loop of a missconfigured BGP session.
Yea, will do. Never saw that kind of a problem before.