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software-development•Jul 10, 2026
Understanding nf_conntrack Table Full Issues
The nf_conntrack table in Linux kernels silently evicts state at a certain threshold, leading to nf_conntrack table full issues and random TCP drops without any error logs.
medium
Original source
Key summary
A Linux kernel issue where the nf_conntrack table becomes full, causing random TCP drops without any error logs.
TL;DR
- nf_conntrack table becomes full
- random TCP drops occur
- no error logs are generated
- kernel silently evicts state
- conntrack table size is limited
- kernel tuning may be required
- connection tracking is affected
- Linux kernel performance is impacted
This content is automatically summarized using AI. For full context, always refer to the original article.
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