[Bug 231476] igb I210 can not turn on TSO6

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231476

            Bug ID: 231476
           Summary: igb I210 can not turn on TSO6
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: lev at FreeBSD.org

FreeBSD 11-STABLE:

# pciconf -lv igb0
igb0 at pci0:5:0:0:        class=0x020000 card=0x153315d9 chip=0x15338086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'I210 Gigabit Network Connection'
    class      = network
    subclass   = ethernet
# ifconfig igb0 | grep options
       
options=6403bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
#

FreeBSD 12-ALPHA6 (chips are essentially the same, one is flash- and other is
flash-less)

# pciconf -lv igb0
igb0 at pci0:1:0:0:        class=0x020000 card=0x00008086 chip=0x157b8086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'I210 Gigabit Network Connection'
    class      = network
    subclass   = ethernet
# ifconfig igb0 | grep options
       
options=e505bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,LRO,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
# ifconfig igb0 tso6
# ifconfig igb0 | grep options
       
options=e505bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,LRO,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
#

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