bin/108743: who(1): IPv6 addresses truncated to maximum IPv4 address length

[Mike Sweetser - Adhost]

The following reply was made to PR bin/108743; it has been noted by GNATS.

From: "Mike Sweetser - Adhost" <mikesw at adhost.com>
To: <bug-followup at FreeBSD.org>,
	<Net147 at hotmail.com>
Cc:  
Subject: Re: bin/108743: who(1): IPv6 addresses truncated to maximum IPv4 address length
Date: Wed, 17 Oct 2007 18:28:06 -0700

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 What gets broken in the ABI?  I'm currently testing this myself with a
 UT_HOSTSIZE of 64, and thus far I haven't encountered any problems.
 
 Fixing UT_HOSTSIZE fixes "who", but does not fix "w", which uses its own
 W_DISPHOSTSIZE variable to define the displayed width of the host as 16.
 This is not changed with UT_HOSTSIZE (although it does recognize
 UT_HOSTSIZE when it comes to actually looking up the utmp structure).
 
 One solution is to change W_DISPHOSTSIZE to 40+ and recompile, which
 will widen the display and display IPv6 properly.
 
 I've attached a patch that adds a -W flag for "w", which expands the
 size to 40; leaving the flag off will default it to the original 16. =20
 
 (This is the first time I've submitted a patch of this nature, so if
 this needs to be done differently, please let me know :)
 
 Mike Sweetser
 
 --------------------------
 Mike Sweetser | Systems Administrator
 
 Adhost Internet
 140 Fourth Avenue North, Suite 360, Seattle, Washington 98109 USA
 
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