+//usage:#define ifconfig_trivial_usage
+//usage: IF_FEATURE_IFCONFIG_STATUS("[-a]") " interface [address]"
+//usage:#define ifconfig_full_usage "\n\n"
+//usage: "Configure a network interface\n"
+//usage: "\n"
+//usage: IF_FEATURE_IPV6(
+//usage: " [add ADDRESS[/PREFIXLEN]]\n")
+//usage: IF_FEATURE_IPV6(
+//usage: " [del ADDRESS[/PREFIXLEN]]\n")
+//usage: " [[-]broadcast [ADDRESS]] [[-]pointopoint [ADDRESS]]\n"
+//usage: " [netmask ADDRESS] [dstaddr ADDRESS]\n"
+//usage: IF_FEATURE_IFCONFIG_SLIP(
+//usage: " [outfill NN] [keepalive NN]\n")
+//usage: " " IF_FEATURE_IFCONFIG_HW("[hw ether" IF_FEATURE_HWIB("|infiniband")" ADDRESS] ") "[metric NN] [mtu NN]\n"
+//usage: " [[-]trailers] [[-]arp] [[-]allmulti]\n"
+//usage: " [multicast] [[-]promisc] [txqueuelen NN] [[-]dynamic]\n"
+//usage: IF_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ(
+//usage: " [mem_start NN] [io_addr NN] [irq NN]\n")
+//usage: " [up|down] ..."
+
+#include "libbb.h"
+#include "inet_common.h"