Garbled print order

[Blayer-Gat Alon]

address@hidden:~]$ uname -rs  
CYGWIN_NT-5.1 1.5.18(0.132/4/2)


address@hidden:~]$ gawk --version
GNU Awk 3.1.5


address@hidden:~]$ ipconfig | awk '$1 == "IP" {print $NF }'
192.168.0.100

ok

address@hidden:~]$ ipconfig | awk '$1 == "IP" {print
"prefix"$NF }'
prefix192.168.0.100

ok

address@hidden:~]$ ipconfig | awk '$1 == "IP" {print
$NF"suffix" }'
suffix8.0.100

Not ok

address@hidden:~]$ ipconfig | awk '$1 == "IP" {print
"prefix"$NF"suffix" }'
suffix192.168.0.100

Not ok


Regards,
Alon Blayer-Gat