[PATCH] ifconfig(8) flag to display IPv4 netmasks in dot-decimal format

[Gary Jennejohn]

On Mon, 11 Apr 2011 16:11:27 +0400
Sergey Vinogradov <boogie at lazybytes.org> wrote:

> I've written a tiny-tiny patch, which adds the '-t' flag to ifconfig(8). 
> It modifies the output to display IPv4 netmasks in dotted decimal notation:
> 
> % ifconfig msk0
> msk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> 
> options=c011a<TXCSUM,VLAN_MTU,VLAN_HWTAGGING,TSO4,VLAN_HWTSO,LINKSTATE>
>          ether 00:16:e6:88:0f:89
>          inet 10.10.0.1 netmask 0xffffff00 broadcast 10.10.0.255
>          media: Ethernet autoselect (none)
>          status: no carrier
> 
> % ifconfig -t msk0
> msk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> 
> options=c011a<TXCSUM,VLAN_MTU,VLAN_HWTAGGING,TSO4,VLAN_HWTSO,LINKSTATE>
>          ether 00:16:e6:88:0f:89
>          inet 10.10.0.1 netmask 255.255.255.0 broadcast 10.10.0.255
>          media: Ethernet autoselect (none)
>          status: no carrier
> 
> There was a discussion [1] in freebsd-hackers@ about adding such 
> functionality to ifconfig(8), which urged me write this patch. The 
> default behavior of ifconfig(8) is kept unmodified, so there shouldn't 
> be any compatibility breakages. At least, it works fine for me :)
> 
> [1] 
> http://lists.freebsd.org/pipermail/freebsd-hackers/2011-April/034997.html
> 

Looks good, except I'd change this line to read like this:
+The
+.Fl t
+flag makes IPv4 netmasks being displayed in dotted decimal notation.
      ^^^^^ results in

-- 
Gary Jennejohn