将IPMask转换为IPAddr
问题描述：
I want to display an object of type net.IPMask in the same notation as net.IPAddr. I want to be able to do this for both IPv4 and IPv6 masks. For instance:
"fffffe00" ---> "255.255.254.0"
I could accomplish this by manually parsing the object of type net.IPMask. However, is there a way to accomplish this by converting an object of type net.IPMask to an object of type net.IPAddr, ideally using functions built in to the net package?
答
net.IPMask is just an IP address, so you can convert it to a net.IP and call its String() method to get a formatted IP address:
mask := net.CIDRMask(23, 32)
addr := net.IP(mask).String()