zebra: Fix crash on macvlan link down/up (backport #15010) #15599
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Whenever a link up change was detected on a macvlan device where the linked device wasn't visible in the namespace zebra was running in, the linked zebra interface was NULL. This was already handled in the event of a link down, but was ommitted from the upside. Added the same null check to the up-side. Signed-off-by: Tomi Salminen <tlsalmin@gmail.com> (cherry picked from commit bdf6a9b)
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Whenever a link up change was detected on a macvlan device where the linked device wasn't visible in the namespace zebra was running in, the linked zebra interface was NULL. This was already handled in the event of a link down, but was ommitted from the upside. Added the same null check to the up-side.
Relates to #13523
This is an automatic backport of pull request #15010 done by Mergify.