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9f30b2cca7
Ticket: CM-6908, CM-6110, CM-13221
Reviewed By: julien, nikhil
Testing Done: added a new test in ifupdown2-tests which covers all cases
- move all mtu handling to a single function in addons/address.py
- Have an ifupdown2 default of 1500 mtu
- add a policy manager max_mtu check (we want to default cumulus max mtu
to 9216)
- special handling for bond and bridges
- print an info log abt setting mtu on bridge
- this can be enhanced in the future to look
at individual port mtu and rejecting the bridge mtu.
this operation can be expensive right now. Hence
just an info log.
- bond and vxlan dev mtu follow the rules of physical device mtu
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>