avahi: set proto random for ipv4 Link-Local address

Set the IP origin "random" for avahi IPv4LL addresses. The reason we
use random and not link-layer for link-local IPv4 addresses is the
fact that they are not based on link-layer info, such as IPv6 eui64
generated LL addresses.

Signed-off-by: Richard Alpe <richard@bit42.se>

board/common/rootfs/etc/avahi/avahi-autoipd.action

@@ -42,7 +42,7 @@ if [ -x /bin/ip -o -x /sbin/ip ] ; then
     case "$1" in
         BIND)
             ip addr flush dev "$2" label "$2:avahi"
-            ip addr add "$3"/16 brd 169.254.255.255 label "$2:avahi" scope link dev "$2"
+            ip addr add "$3"/16 brd 169.254.255.255 label "$2:avahi" scope link dev "$2" proto 6
             ip route add default dev "$2" metric "$METRIC" scope link ||:
             ;;
 

board/common/rootfs/etc/iproute2/rt_addrprotos

@@ -1,2 +1,3 @@
 4 static
 5 dhcp
+6 random

src/statd/statd.c

@@ -169,6 +169,7 @@ static const char *get_yang_origin(const char *protocol)
 		{"kernel_ll",	"link-layer"},
 		{"static",	"static"},
 		{"dhcp",	"dhcp"},
+		{"random",	"random"},
 	};
 
 	for (i = 0; i < sizeof(map) / sizeof(map[0]); i++) {