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A rule without offload will never touch the hardware. It will run in software, and you will see high CPU usage.
nft add rule netdev filter ingress drop
You cannot offload ct state established easily because the hardware would need to maintain stateful timers. For true offload, use stateless rules or ensure tc can offload the connection tracking (requires advanced hardware with full conntrack offload, like Mellanox ASAP²).
Benefits:
Trade-offs / limitations:
Key components:
Distribution-specific:
# Fedora / RHEL
dnf install kmod-nft-offload
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Kmod-nft-offload | 360p 2027 |
A rule without offload will never touch the hardware. It will run in software, and you will see high CPU usage.
nft add rule netdev filter ingress drop
You cannot offload ct state established easily because the hardware would need to maintain stateful timers. For true offload, use stateless rules or ensure tc can offload the connection tracking (requires advanced hardware with full conntrack offload, like Mellanox ASAP²).
Benefits:
Trade-offs / limitations:
Key components:
Distribution-specific:
# Fedora / RHEL
dnf install kmod-nft-offload