[Differential] D8905: if: Defer the if_up until the ifnet.if_ioctl is called.

[sepherosa_gmail.com (Sepherosa Ziehau)]

sepherosa_gmail.com updated the summary for this revision.

REVISION DETAIL
  https://reviews.freebsd.org/D8905

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To: sepherosa_gmail.com, delphij, royger, decui_microsoft.com, honzhan_microsoft.com, howard0su_gmail.com, adrian, hiren, bz, gnn, glebius, karels
Cc: jhb, freebsd-net-list