https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193802
Friedrich Volkmann <b...@volki.at> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |b...@volki.at --- Comment #1 from Friedrich Volkmann <b...@volki.at> --- Same here. I run into problems sending TCP data bigger than ~4 KB when the TCO option is enabled (which is the default!). See https://forums.freebsd.org/threads/error-sending-tcp-data-4kb.50431 for the details. The problems occur with both an up-to-date i386 kernel and an up-to-date amd64 kernel (10.1-STABLE r278696). dmesg reports: em0: <Intel(R) PRO/1000 Network Connection 7.4.2> port 0xf080-0xf09f mem 0xf7f00000-0xf7f1ffff,0xf7f3c000-0xf7f3cfff irq 20 at device 25.0 on pci0 em0: Using an MSI interrupt # ifconfig -v em0 em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=4009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,VLAN_HWTSO> ether ... inet ... netmask ... broadcast ... nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> media: Ethernet autoselect (100baseTX <full-duplex>) status: active This is an onboard LAN controller (I218-V according to the manual) on an MSI Z97S SLI Plus motherboard (Intel Z97 Express chipset). The importance has already been set to "Affects Many People". This is probably true, and it is difficult for affected users to get help as they cannot send data. To make it even worse, the symptoms (error messages such as "The server may be unavailable or is refusing SMTP connections") do not reveal the real cause of the problem. -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-bugs@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"