More details to come - PR submitted to track working/failing revisions/dates. Observed on my Softiron Overdrive 1000, running a kernel from r329060: root@od1000:~ # ping 192.168.11.1 PING 192.168.11.1 (192.168.11.1): 56 data bytes 64 bytes from 192.168.11.1: icmp_seq=0 ttl=64 time=297.339 ms 64 bytes from 192.168.11.1: icmp_seq=1 ttl=64 time=314.382 ms 64 bytes from 192.168.11.1: icmp_seq=2 ttl=64 time=303.234 ms 64 bytes from 192.168.11.1: icmp_seq=3 ttl=64 time=356.380 ms 64 bytes from 192.168.11.1: icmp_seq=4 ttl=64 time=379.047 ms 64 bytes from 192.168.11.1: icmp_seq=5 ttl=64 time=402.130 ms 64 bytes from 192.168.11.1: icmp_seq=6 ttl=64 time=464.899 ms 64 bytes from 192.168.11.1: icmp_seq=7 ttl=64 time=493.329 ms 64 bytes from 192.168.11.1: icmp_seq=8 ttl=64 time=537.635 ms 64 bytes from 192.168.11.1: icmp_seq=9 ttl=64 time=570.663 ms 64 bytes from 192.168.11.1: icmp_seq=10 ttl=64 time=621.863 ms 64 bytes from 192.168.11.1: icmp_seq=11 ttl=64 time=660.115 ms 64 bytes from 192.168.11.1: icmp_seq=12 ttl=64 time=701.733 ms 64 bytes from 192.168.11.1: icmp_seq=13 ttl=64 time=744.956 ms 64 bytes from 192.168.11.1: icmp_seq=14 ttl=64 time=791.934 ms 64 bytes from 192.168.11.1: icmp_seq=15 ttl=64 time=845.377 ms 64 bytes from 192.168.11.1: icmp_seq=16 ttl=64 time=898.613 ms 64 bytes from 192.168.11.1: icmp_seq=17 ttl=64 time=954.177 ms 64 bytes from 192.168.11.1: icmp_seq=18 ttl=64 time=1014.196 ms 64 bytes from 192.168.11.1: icmp_seq=19 ttl=64 time=1056.473 ms 64 bytes from 192.168.11.1: icmp_seq=20 ttl=64 time=1059.959 ms 64 bytes from 192.168.11.1: icmp_seq=21 ttl=64 time=1062.538 ms 64 bytes from 192.168.11.1: icmp_seq=22 ttl=64 time=1062.954 ms 64 bytes from 192.168.11.1: icmp_seq=23 ttl=64 time=1052.935 ms 64 bytes from 192.168.11.1: icmp_seq=24 ttl=64 time=1064.865 ms 64 bytes from 192.168.11.1: icmp_seq=25 ttl=64 time=1056.929 ms 64 bytes from 192.168.11.1: icmp_seq=26 ttl=64 time=1062.470 ms ^C --- 192.168.11.1 ping statistics --- 28 packets transmitted, 27 packets received, 3.6% packet loss round-trip min/avg/max/stddev = 297.339/734.486/1064.865/283.196 ms cognet@ reports a Dec 3 kernel worked. Feb 15 09:38:17 od1000 kernel: mskc0: <Marvell Yukon 88E8059 Gigabit Ethernet> port 0x1000-0x10ff mem 0x40000000-0x40003fff at device 0.0 on pci2 Feb 15 09:38:17 od1000 kernel: msk0: <Marvell Technology Group Ltd. Yukon Optima Id 0xbc Rev 0x01> on mskc0 Feb 15 09:38:17 od1000 kernel: msk0: Using defaults for TSO: 65518/35/2048 Feb 15 09:38:17 od1000 kernel: msk0: Ethernet address: <elided> Feb 15 09:38:17 od1000 kernel: miibus0: <MII bus> on msk0 Feb 15 09:38:17 od1000 kernel: e1000phy0: <Marvell PHYG65G Gigabit PHY> PHY 0 on miibus0 Feb 15 09:38:17 od1000 kernel: e1000phy0: none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-master, 1000baseT-FDX, 1000baseT-FDX-master, auto, auto-flow
Fixed by cognet in r329317 https://svnweb.freebsd.org/changeset/base/329317