Don't enable TSO by default. Users of RTL8169/8110 reported watchdog timeout issues and the root cause seems to stem from silicon bug of controller. Personally I couldn't reproduce it on RTL8169 controller but it seems it's dependent on usage pattern. For newer PCIe based controllers I have no TSO complaints but turning off TSO would be more safe. Users who are sure that their controller works with TSO can still reenable the TSO with ifconfig(8).
Don't enable TSO by default. Users of RTL8169/8110 reported
watchdog timeout issues and the root cause seems to stem from
silicon bug of controller. Personally I couldn't reproduce it on
RTL8169 controller but it seems it's dependent on usage pattern.
For newer PCIe based controllers I have no TSO complaints but
turning off TSO would be more safe. Users who are sure that
their controller works with TSO can still reenable the TSO with
ifconfig(8).

Reported by:	Oliver Lehmann (lehmann at ans-netz dot de), Eugene Butusov (ebutusov at gmail dot com)

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