Linux version sort; letters first

Question

GNU sort -V is great for sorting IP adresses. Unfortunately it throws all lines with leading letters (as opposed to numbers) to the bottom of the pile. Is there a way around it?

^{Note:
• 192.168.0.103 is missing because it's the local host.
• MACs/HW addresses have been changed.}

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• cat

user@host:~$ cat /proc/net/arp

IP address       HW type     Flags       HW address            Mask     Device
192.168.0.106    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.1      0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.101    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.104    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.110    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.108    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.107    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.102    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.105    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.100    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.109    0x1         0x2         00:00:00:00:00:00     *        wlan0

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• sort -V

user@host:~$ sort -V /proc/net/arp

192.168.0.1      0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.100    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.101    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.102    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.104    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.105    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.106    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.107    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.108    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.109    0x1         0x2         00:00:00:00:00:00     *        wlan0
192.168.0.110    0x1         0x2         00:00:00:00:00:00     *        wlan0
IP address       HW type     Flags       HW address            Mask     Device

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Answer 1

Here's one technique to keep the header at the top: redirect the file, and from the stream, consume the first line, then give the rest of the lines to sort.

{ IFS= read -r header; echo "$header"; sort -V; } < /proc/net/arp