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libip: ignore ipv6 link local addresses for myipaddr()

--- a/sys/src/libip/myipaddr.c

+++ b/sys/src/libip/myipaddr.c

@@ -46,6 +46,10 @@

 			maskip(lifc->ip, loopbackmask, mynet);

 			if(ipcmp(mynet, loopbacknet) == 0)

 				continue;

+	

+			/* ipv6 linklocal */

+			if(ISIPV6LINKLOCAL(lifc->ip))

+				continue;

 			ipmove(ip, lifc->ip);

 			return 0;