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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] net: ioctl SIOCSIFADDR minor cleanup
Date: Tue, 15 Nov 2016 22:31:11 -0500 (EST)
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From: YUAN Linyu <Linyu.Yuan@alcatel-sbell.com.cn>
Date: Wed, 16 Nov 2016 03:13:31 +0000

> So assign label to request name will do same thing as original code.

Nope.  dev->name does not have the colon, it was trimmed from the
string for the device lookup.  So the found device's dev->name does
not have the colon character, even if it was in ifr.ifr_name

This was my entire point.

You are changing the behvaior of the code in an invalid way.