... Одним из первых абзацев в README драйвера IXGBE для 10Гбит/с сетевых карт Intel является рекомендация пересобирать его с отключением LRO. {quote} Disable LRO if enabling ip forwarding or bridging ------------------------------------------------- WARNING: The ixgbe driver supports the Large Receive Offload (LRO) feature. This option offers the lowest CPU utilization for receives but is completely incompatible with *routing/ip forwarding* and *bridging*. If enabling ip forwarding or bridging is a requirement, it is necessary to disable LRO using compile time options as noted in the LRO section later in this document. The result of not disabling LRO when combined with ip forwarding or bridging can be low throughput or even a kernel panic.
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