From: Mark Wooding <mdw@distorted.org.uk>
Date: Wed, 8 Apr 2020 12:07:56 +0000 (+0100)
Subject: svc/tripe-ifup.in: Don't set remote IPv6 address until interface is up.
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/tripe/commitdiff_plain/0fc1588c95b568da6c6153e556ef98d3473646ff

svc/tripe-ifup.in: Don't set remote IPv6 address until interface is up.

This is annoying.  Later Linux kernels complain about adding routes to
an interface which is still down.
---

diff --git a/svc/tripe-ifup.in b/svc/tripe-ifup.in
index 032142c5..80a315b7 100644
--- a/svc/tripe-ifup.in
+++ b/svc/tripe-ifup.in
@@ -119,9 +119,6 @@ case $have6,$# in
       try ip addr add "$a" dev "$ifname"
       haveaddr6=t
     done
-    case ${r6addr+set} in
-      set) try ip route add $r6addr proto static dev "$ifname" ;;
-    esac
     ;;
 esac
 
@@ -144,6 +141,18 @@ case $haveaddr4,$haveaddr6 in
     ;;
 esac
 
+###--------------------------------------------------------------------------
+### Set the peer IPv6 address if any.
+
+## IPv6 point-to-point links seem broken in Linux.  Attach the local and
+## remote addresses by hand.
+set -- $l6addr
+case $have6,$#,${r6addr+set} in
+  t,[1-9]*,set)
+    try ip route add $r6addr proto static dev "$ifname"
+    ;;
+esac
+
 ###--------------------------------------------------------------------------
 ### Set up routing.