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Your automated RPKI invalid filtering has false positives

Networking by liam_funky 6 replies 428 views
liam_funky

Member OP

Vancouver

#1

1. Background
A) I operate a small anycast network
B) Prefix: 203.0.113.0/24
C) Origin AS 64496

2. The problem
A) Your automated RPKI filtering marked my prefix INVALID yesterday
B) No outage on other upstreams
C) ROA valid per rpki-validator, your tool disagreed

3. Timeline
I. 14:00 UTC - routine ROA refresh
Ii. 14:03 UTC - your filters applied new state
Iii. 14:05 UTC - traffic dropped 40%
Iv. 14:30 UTC - manual intervention restored

4. Request
A) Review timing between ROA propagation and filter application
B) Grace period of 15 minutes would prevent this

5. Contact
A) My NOC available 24/7
B) Happy to share logs

CR

Member

#2

He, my VPS it had same problem last month!!! Caramba!!!

My provider it filtered my prefix more fast than the ROA he propagated, nossa!!! Not funny when he happens at 3am

I think he is timing bug too, my ROA was new but valid

JokoNord

Member

4 #3

Yaml
Rpki_filtering:
Timing_bug: true
Symptoms:
- ROA_valid: true
- filter_state: INVALID
- propagation_delay: ignored
Fix:
- RTFM # the RFC
- add:
- grace_period: 900s
- staggered_deployment: true

`rpki-client` has this. `routinator` too. Your code does not.

RTFM

traffic worse than my packet loss
LE

Member

4 #4

@liam_funky lah your list very nice leh

Can confirm same thing happen to me before lor

Already move to different upstream liao

Their ROA cache stale one

Hel

Member

Bare Metal Purist

#5

Stale cache hits anycast hardest.

StuSpock

Member

NTP fundamentalist

#6

Which rpki-client version did they deploy

WH

Member

#7

Which upstream and what grace period

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