[PATCH 1/4] net: if_arp: add ARPHRD_PUREIP type

[Rocco Yue]

> Does changelog mean adding these details to the commit message ?
> 
> Yes please.
> 

will do.

> > > And are these user-visable flags documented in a man page or something
> > > else somewhere?  If not, how does userspace know about them?
> > > 
> > 
> > There are mappings of these device types value in the libc:
> > "/bionic/libc/kernel/uapi/linux/if_arp.h".
> > userspace can get it from here.
> 
> Yes, they will show up in a libc definition, but where is it documented
> in text form what the flag does?

Judging from the changes of ARPHRD_xxx submitted before, I am sorry
I could not find the corresponding doucuments to describe their 
respective behaviors in details. Perhaps the best way to understand
their behaviors is to read the code directly.

Thanks,
Rocco