Hi, I recently installed a gigabit ethernet card on my ultra 60. The machine is running a 2.6.24.3 kernel compiled with gcc-4.1. lspci shows : 0000:00:02.0 Ethernet controller: National Semiconductor Corporation DP83065 [Saturn] 10/100/1000 Ethernet Controller (rev 30) Since, I encountered a batch of error in the kernel log each time I received an ipv6 packet: eth1: hw csum failure. Call Trace: [00000000006c02e8] __skb_checksum_complete+0x10/0x40 [00000000101bec5c] icmpv6_rcv+0x1e4/0x860 [ipv6] [00000000101a5d20] ip6_input_finish+0x1c8/0x4e0 [ipv6] [00000000101a6160] ip6_mc_input+0xa8/0xc0 [ipv6] [00000000101a6434] ipv6_rcv+0x25c/0x480 [ipv6] [00000000006c4a14] netif_receive_skb+0x2fc/0x5c0 [00000000006c79b0] process_backlog+0x78/0x120 [00000000006c73b0] net_rx_action+0x158/0x240 [00000000004725b4] __do_softirq+0xbc/0x100 [000000000047265c] do_softirq+0x64/0x80 [000000000042f738] handler_irq+0xa0/0xc0 [00000000004208b4] tl0_irq5+0x1c/0x20 [0000000000428944] cpu_idle+0x12c/0x160 [0000000000446334] after_lock_tlb+0x1a4/0x1b0 [fffff800af05baa0] 0xfffff800af05baa8 The ethtool show the following offload : root#ethtool -k eth1 Offload parameters for eth1: Cannot get device rx csum settings: Operation not supported rx-checksumming: off tx-checksumming: on scatter-gather: on tcp segmentation offload: off udp fragmentation offload: off generic segmentation offload: off Offload seems to be off for reception. Is this problem related to the hardware or to the kernel ? Seb -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html