Curious mostly about malformed updates coming from DOD ASN

Drew Weaver via NANOG <[email protected]> Wed, 17 Jun 2026 12:17:36 +0000
Newsgroups gmane.org.operators.nanog
Message-ID <[email protected]>
Howdy,

I'm mostly just curious I've seen things like this before but more in the past 16 hours.

Are other folks seeing these?

Malformed UPDATE message received from neighbor (Lumen) (VRF: default) - message length 189 bytes, error flags 0x00000080, action taken "TreatAsWdr". Error details: "Error 0x00000080, Field "Attr-length", Attribute 40 (Flags 0xc0, Length 37), Data [c0282500]". NLRIs: [IPv4 Unicast] 55.27.156.0/24<http://55.27.156.0/24> 55.27.184.0/24<http://55.27.184.0/24> 55.74.158.0/24<http://55.74.158.0/24> 55.74.157.0/24<http://55.74.157.0/24> 55.67.156.0/24<http://55.67.156.0/24> 55.74.156.0/24<http://55.74.156.0/24>

I'm wondering because it could be that the update itself is fine but my router cannot interpret it properly.

Thanks everyone, sorry for noise.

-Drew

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