getting close to nsupdate

Signed-off-by: Jeff Carr <jcarr@wit.com>

nsupdate.go

@@ -0,0 +1,33 @@
+// inspired from:
+// https://github.com/mactsouk/opensource.com.git
+// and
+// https://coderwall.com/p/wohavg/creating-a-simple-tcp-server-in-go
+
+package main
+
+import (
+	"os"
+)
+
+//	./go-nsupdate \
+//		--tsig-algorithm=hmac-sha512 \
+//		--tsig-secret="OWh5/ZHIyaz7B8J9m9ZDqZ8448Pke0PTpkYbZmFcOf5a6rEzgmcwrG91u1BHi1/4us+mKKEobDPLw1x6sD+ZJw==" \
+//		-i eno2 farm001.lab.wit.org
+
+func nsupdate() {
+	var tsigSecret string
+	log(true, "nsupdate() START")
+	cmd := "go-nsupdate --tsig-algorithm=hmac-sha512"
+	tsigSecret = os.Getenv("TIG_SECRET")
+	cmd += " --tig-secret=\"" + tsigSecret + "\""
+	cmd += " -i wlo1 " + me.hostname
+	log(true, "nsupdate() RUN:", cmd)
+
+	for s, t := range me.ipmap {
+		if (t.IsReal()) {
+			if (t.ipv6) {
+				log(true, "nsupdate() found real AAAA =", s, "on iface", t.iface.Name)
+			}
+		}
+	}
+}