netstat counts input traffic twice

[Ben RUBSON]

> On 23 Sep 2016, at 19:59, Ben RUBSON <ben.rubson at gmail.com> wrote:
> 
> Hello,
> 
> I found a strange issue where input traffic is counted twice,
> sometimes more.

As a very disgusting & temporary workaround, I did the following,
so that statistics are made on the networks, not on the links :

--- usr.bin/netstat/if.c.ori	2016-08-12 02:08:29.000000000 +0200
+++ usr.bin/netstat/if.c	2016-09-23 21:20:03.000000000 +0200
@@ -513,19 +513,19 @@
 /*
  * Obtain stats for interface(s).
  */
 static void
 fill_iftot(struct iftot *st)
 {
 	struct ifaddrs *ifap, *ifa;
 	bool found = false;
 
 	if (getifaddrs(&ifap) != 0)
 		xo_err(EX_OSERR, "getifaddrs");
 
 	bzero(st, sizeof(*st));
 
 	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
-		if (ifa->ifa_addr->sa_family != AF_LINK)
+		if (ifa->ifa_addr->sa_family != AF_INET)
 			continue;
 		if (interface) {
 			if (strcmp(ifa->ifa_name, interface) == 0)