BGP UPDATE failed, malformed packet

Bugs
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6

The neighbor is not advertising any of our prefixes.

They should be accepting our prefixes however if they goofed on their filters is it possible that could cause this issue? The way I’m seeing it is the malformed packet is happening on the router and being sent to the neighbor so that wouldn’t be the issue.

I am not. I have another mBGP session up for full routes however. To ensure this wasn’t the issue I’ve shutdown that session to no avail.

user@R2:~$ show ip bgp neighbors 192.168.100.165 advertised-routes 
BGP table version is 0, local router ID is 192.168.100.166
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 192.168.90.0    192.168.100.166            0         32768 i

Total number of prefixes 1

I think the thing that’s throwing me off is the malformed BGP UPDATE message - that’s not normal behavior correct? Or is this a red herring I’m following?