https://community.hpe.com/t5/operating-system-linux/hw-tcp-v4-csum-failed/m-p/2948153#M4216 Disable ECN: echo 0 &gt; /proc/sys/net/ipv4/tcp_ecn<BR /><BR />Regards,<BR />Sergejs Thu, 10 Apr 2003 14:45:43 GMT Sergejs Svitnevs 2003-04-10T14:45:43Z https://community.hpe.com/t5/operating-system-linux/hw-tcp-v4-csum-failed/m-p/2948152#M4215 compaq proliant 380 DL with Dual Xeon Processor, RedHat 7.3 kernel: 2.4.18-3<BR />I get multiple entries in dmesg:<BR />hw tcp v4 csum failed <BR />after some time some processes stops (like smtp) and I can not login on console or with ssh, only a reboot can help.<BR />Have anyone a idea?<BR />Thanks Thu, 10 Apr 2003 11:04:46 GMT https://community.hpe.com/t5/operating-system-linux/hw-tcp-v4-csum-failed/m-p/2948152#M4215 Morscher Bernhard 2003-04-10T11:04:46Z https://community.hpe.com/t5/operating-system-linux/hw-tcp-v4-csum-failed/m-p/2948153#M4216 Disable ECN: echo 0 &gt; /proc/sys/net/ipv4/tcp_ecn<BR /><BR />Regards,<BR />Sergejs Thu, 10 Apr 2003 14:45:43 GMT https://community.hpe.com/t5/operating-system-linux/hw-tcp-v4-csum-failed/m-p/2948153#M4216 Sergejs Svitnevs 2003-04-10T14:45:43Z