[Bug 233004] ix0 at 12-BETA2: can not turn off RXCSUM/RXCSUM_IPV6

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233004

--- Comment #2 from Lev A. Serebryakov <lev at FreeBSD.org> ---
(In reply to Stephen Hurd from comment #1)
Nothing changes:

root@:/tmp # ifconfig ix0
ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 90:e2:ba:a3:c0:90
        inet 192.168.10.2 netmask 0xffffff00 broadcast 192.168.10.255 
        media: Ethernet autoselect (10Gbase-SR <full-duplex,rxpause,txpause>)
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
root@:/tmp # ifconfig ix0 -rxcsum
root@:/tmp # ifconfig ix0
ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 90:e2:ba:a3:c0:90
        inet 192.168.10.2 netmask 0xffffff00 broadcast 192.168.10.255 
        media: Ethernet autoselect (10Gbase-SR <full-duplex,rxpause,txpause>)
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
root@:/tmp # ifconfig ix0 -rxcsum6
root@:/tmp # ifconfig ix0
ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 90:e2:ba:a3:c0:90
        inet 192.168.10.2 netmask 0xffffff00 broadcast 192.168.10.255 
        media: Ethernet autoselect (10Gbase-SR <full-duplex,rxpause,txpause>)
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

Interface DOESN'T change state (up/down) (no "ix0: link state changed to
DOWN/UP" on console or in dmesg).

When I turn on/turn off txcsum and/or txcsum6 interface goes via down/up
sequence according to console/dmesg. And these options work :-)

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