NetInterfaces

This small module is a Linux performance fix for net.Interfaces(). On systems with many network interfaces, listing IP addresses across all interfaces returned by net.Interfaces() is inefficient because it requires a separate netlink call for each interface, and each netlink call dumps all addresses across all interfaces.

This patch fixes that by using a single netlink call to collect addresses across all interfaces.

How to use

Import this module, then use NetInterfaces() in place of net.Interfaces():

import . "github.com/wjordan/netinterfaces"

interfaces, _ := NetInterfaces()
for _, iface := range interfaces {
    addrs, _ := iface.Addrs()
}