Hello Everyone!
I'm trying to create a script which picks up MAC from the output of arp -a <ipaddress> command. I have stupid error with 1 single ip where the match seems to fail:
$ip="10.52.9.19"
$mac = arp -a $ip;
arp -a $ip
($mac | ? { $_ -match $ip }) -match "([0-9A-F]{2}([:-][0-9A-F]{2}){5})"
($mac | ? { $_ -match $ip }) -match "([0-9A-F][0-9A-F]-){5}([0-9A-F][0-9A-F])"
$matches[0];
$ip="10.52.9.9"
$mac = arp -a $ip;
arp -a $ip
($mac | ? { $_ -match $ip }) -match "([0-9A-F]{2}([:-][0-9A-F]{2}){5})"
($mac | ? { $_ -match $ip }) -match "([0-9A-F][0-9A-F]-){5}([0-9A-F][0-9A-F])"
$matches[0];
For the ip 10.52.9.19 for some yet unknown reason I get back the ip instead of the MAC. This is the output of the script above:
Interface: 10.52.9.195 --- 0xa
Internet Address Physical Address Type
10.52.9.19 5c-f3-fc-e5-9e-d8 dynamic
10.52.9.19 5c-f3-fc-e5-9e-d8 dynamic
10.52.9.19 5c-f3-fc-e5-9e-d8 dynamic
10.52.9.19
Interface: 10.52.9.195 --- 0xa
Internet Address Physical Address Type
10.52.9.9 00-50-56-a1-00-21 dynamic
True
True
00-50-56-a1-00-21
What am I doing wrong ?