SW-281365 fix dhcpcd route overflow recovery#18
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aminescu-dn merged 3 commits intoJul 9, 2026
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colaru-dn
approved these changes
Jul 6, 2026
aminescu-dn
approved these changes
Jul 9, 2026
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Summary
Route socket overflow currently forces an immediate full interface-state rebuild every time the kernel reports
ENOBUFS. Under sustained route churn this makesdhcpcdspend most of its time relearning the same state, which amplifies CPU and memory pressure in the inband container.This change keeps the urgent part of the handler immediate: drain the route socket so the event loop can continue. The expensive interface rediscovery is scheduled once and coalesced while another recovery is already pending, limiting repeated full rebuilds during an overflow storm.
If scheduling the delayed recovery fails,
dhcpcdfalls back to the previous synchronous recovery path.