From bcca0a027786c0d23f3f70c9f21b3332f41786e1 Mon Sep 17 00:00:00 2001
From: Jouke Witteveen <j.witteveen@gmail.com>
Date: Thu, 27 Feb 2014 12:48:12 +0100
Subject: Add option to bypass Duplicate Address Detection

After several requests, here is SkipDAD to bypass Duplicate Address
Detection.
---
 src/lib/connections/ethernet |  4 +++-
 src/lib/ip                   | 12 +++++++-----
 2 files changed, 10 insertions(+), 6 deletions(-)

(limited to 'src/lib')

diff --git a/src/lib/connections/ethernet b/src/lib/connections/ethernet
index 3db69a0..ce00dc3 100644
--- a/src/lib/connections/ethernet
+++ b/src/lib/connections/ethernet
@@ -19,7 +19,9 @@ ethernet_up() {
         return 1
     fi
 
-    if ! is_yes "${SkipNoCarrier:-no}"; then
+    if is_yes "${SkipNoCarrier:-no}"; then
+        SkipDAD=yes
+    else
         # Some cards are plain slow to come up. Don't fail immediately.
         if ! timeout_wait "${TimeoutCarrier:-5}" '(( $(< "/sys/class/net/$Interface/carrier") ))'; then
             report_error "No connection found on interface '$Interface' (timeout)"
diff --git a/src/lib/ip b/src/lib/ip
index a93eaee..4698595 100644
--- a/src/lib/ip
+++ b/src/lib/ip
@@ -117,7 +117,7 @@ ip_set() {
       ;;
       stateless|static)
         for addr in "${Address6[@]}"; do
-            if ! do_debug ip -6 addr add $addr dev "$Interface"; then
+            if ! do_debug ip -6 addr add $addr $(is_yes "${SkipDAD:-no}" && printf nodad) dev "$Interface"; then
                 report_error "Could not add address '$addr' to interface '$Interface'"
             fi
         done
@@ -125,10 +125,12 @@ ip_set() {
     esac
 
     if [[ $IP6 ]]; then
-        # Wait for Duplicate Address Detection to finish
-        if ! timeout_wait "${TimeoutDAD:-3}" '[[ -z "$(ip -6 addr show dev "$Interface" tentative)" ]]'; then
-            report_error "Duplicate Address Detection is taking too long on interface '$Interface'"
-            return 1
+        if ! is_yes "${SkipDAD:-no}"; then
+            # Wait for Duplicate Address Detection to finish
+            if ! timeout_wait "${TimeoutDAD:-3}" '[[ -z "$(ip -6 addr show dev "$Interface" tentative)" ]]'; then
+                report_error "Duplicate Address Detection is taking too long on interface '$Interface'"
+                return 1
+            fi
         fi
 
         # Add static IPv6 routes after DAD has finished
-- 
cgit v1.2.3-24-g4f1b