Can't specify AS_PATH attribute in BGP packet [Scapy]

Question

When using Scapy, I am unable to set the AS_PATH attribute. I have tried following the answer provided in this StackOverflow page How to use AS_PATH attribute in scapy for BGP?, but it did not work. I have also tried inputting the following statements in the attribute parameter, but I have not been able to.

setAS=BGPPathAttr(type_flags="Transitive", type_code="AS_PATH", attribute="2")
setAS=BGPPathAttr(type_flags="Transitive", type_code="AS_PATH",attr_len=None,attribute=BGPPAAS4BytesPath(segments=BGPPAAS4BytesPath().ASPathSegment(segment_type=2,segment_length=None,segment_value=[2])))

My desired outcome is to send a packet with the AS_PATH value of 2.

score 0 · Answer 1 · answered Oct 24 '22 at 19:44

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AS_PATH is well-known mandatory, not transitive.

answered Oct 24 '22 at 19:44

Andrew

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Does this mean that the AS_PATH variable cannot be edited? – PompousPompey Nov 03 '22 at 04:04
No, it means "type_flags="Transitive", type_code="AS_PATH"" above is wrong --not sure what it will trigger. – Andrew Nov 03 '22 at 13:54

Can't specify AS_PATH attribute in BGP packet [Scapy]

1 Answers1