Space or newline after ':' is recognized as a mapping and as a result an
ipv6 ending in ':' is not parsed as a string. The solution is to quote
the address. For consistency all other addresses (including mac) are
quoted.

Signed-off-by: David Limbeck <d.limb...@proxmox.com>
---
 PVE/QemuServer/Cloudinit.pm | 38 +++++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/PVE/QemuServer/Cloudinit.pm b/PVE/QemuServer/Cloudinit.pm
index 5be820c..4dc4a14 100644
--- a/PVE/QemuServer/Cloudinit.pm
+++ b/PVE/QemuServer/Cloudinit.pm
@@ -174,9 +174,9 @@ sub configdrive2_network {
            } else {
                my ($addr, $mask) = split_ip4($net->{ip});
                $content .= "iface $id inet static\n";
-               $content .= "        address $addr\n";
-               $content .= "        netmask $mask\n";
-               $content .= "        gateway $net->{gw}\n" if $net->{gw};
+               $content .= "        address '$addr'\n";
+               $content .= "        netmask '$mask'\n";
+               $content .= "        gateway '$net->{gw}'\n" if $net->{gw};
            }
        }
        if ($net->{ip6}) {
@@ -185,9 +185,9 @@ sub configdrive2_network {
            } else {
                my ($addr, $mask) = split('/', $net->{ip6});
                $content .= "iface $id inet6 static\n";
-               $content .= "        address $addr\n";
-               $content .= "        netmask $mask\n";
-               $content .= "        gateway $net->{gw6}\n" if $net->{gw6};
+               $content .= "        address '$addr'\n";
+               $content .= "        netmask '$mask'\n";
+               $content .= "        gateway '$net->{gw6}'\n" if $net->{gw6};
            }
        }
     }
@@ -270,13 +270,13 @@ sub nocloud_network_v2 {
        }
        if (@addresses) {
            $content .= "${i}addresses:\n";
-           $content .= "${i}- $_\n" foreach @addresses;
+           $content .= "${i}- '$_'\n" foreach @addresses;
        }
        if (defined(my $gw = $ipconfig->{gw})) {
-           $content .= "${i}gateway4: $gw\n";
+           $content .= "${i}gateway4: '$gw'\n";
        }
        if (defined(my $gw = $ipconfig->{gw6})) {
-           $content .= "${i}gateway6: $gw\n";
+           $content .= "${i}gateway6: '$gw'\n";
        }
 
        next if $dns_done;
@@ -287,11 +287,11 @@ sub nocloud_network_v2 {
            $content .= "${i}nameservers:\n";
            if (defined($nameservers) && @$nameservers) {
                $content .= "${i}  addresses:\n";
-               $content .= "${i}  - $_\n" foreach @$nameservers;
+               $content .= "${i}  - '$_'\n" foreach @$nameservers;
            }
            if (defined($searchdomains) && @$searchdomains) {
                $content .= "${i}  search:\n";
-               $content .= "${i}  - $_\n" foreach @$searchdomains;
+               $content .= "${i}  - '$_'\n" foreach @$searchdomains;
            }
        }
     }
@@ -321,7 +321,7 @@ sub nocloud_network {
 
        $content .= "${i}- type: physical\n"
                  . "${i}  name: eth$id\n"
-                 . "${i}  mac_address: $mac\n"
+                 . "${i}  mac_address: '$mac'\n"
                  . "${i}  subnets:\n";
        $i .= '  ';
        if (defined(my $ip = $ipconfig->{ip})) {
@@ -330,10 +330,10 @@ sub nocloud_network {
            } else {
                my ($addr, $mask) = split_ip4($ip);
                $content .= "${i}- type: static\n"
-                         . "${i}  address: $addr\n"
-                         . "${i}  netmask: $mask\n";
+                         . "${i}  address: '$addr'\n"
+                         . "${i}  netmask: '$mask'\n";
                if (defined(my $gw = $ipconfig->{gw})) {
-                   $content .= "${i}  gateway: $gw\n";
+                   $content .= "${i}  gateway: '$gw'\n";
                }
            }
        }
@@ -345,9 +345,9 @@ sub nocloud_network {
                $content .= "${i}- type: dhcp6\n";
            } else {
                $content .= "${i}- type: static\n"
-                      . "${i}  address: $ip\n";
+                      . "${i}  address: '$ip'\n";
                if (defined(my $gw = $ipconfig->{gw6})) {
-                   $content .= "${i}  gateway: $gw\n";
+                   $content .= "${i}  gateway: '$gw'\n";
                }
            }
        }
@@ -359,11 +359,11 @@ sub nocloud_network {
        $content .= "${i}- type: nameserver\n";
        if (defined($nameservers) && @$nameservers) {
            $content .= "${i}  address:\n";
-           $content .= "${i}  - $_\n" foreach @$nameservers;
+           $content .= "${i}  - '$_'\n" foreach @$nameservers;
        }
        if (defined($searchdomains) && @$searchdomains) {
            $content .= "${i}  search:\n";
-           $content .= "${i}  - $_\n" foreach @$searchdomains;
+           $content .= "${i}  - '$_'\n" foreach @$searchdomains;
        }
     }
 
-- 
2.11.0


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