Comment 5 for bug 2032817
Revision history for this message
| Dr. Jens Harbott (j-harbott) wrote Re: OVN: Distributed FIP packet drops when provider network MTU exceeds tenant network MTU | #5 |
© 2004
Canonical Ltd.
•
Terms of use
•
Data privacy
•
Contact Launchpad Support
•
Blog
•
Careers
•
System status
•
1b1ed1a
(Get the code!)
Further findings:
OVN also doesn't handle the DF bit, where OVS would generate an ICMP error response, it just tries to forward the packet, which gets then duefully dropped by the kernel.
East-west traffic is affected as well, if two tenant networks with different MTUs are connected via a router, the same issue happens.
And just to double check I verified that in an OVS based deployment, both fragmentation and ICMP responses work as expected (and as mandated by the relevant RFCs).