[PATCH installer 06/15] install: do not rely on interface name map to be fully populated

[Christoph Heiss <c.heiss@proxmox.com>]

While this hasn't been a problem yet AFAIK, better be safe than sorry.

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
 Proxmox/Install.pm | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Proxmox/Install.pm b/Proxmox/Install.pm
index 45aa53b..04264a9 100644
--- a/Proxmox/Install.pm
+++ b/Proxmox/Install.pm
@@ -851,7 +851,11 @@ my sub setup_ifupdown2_config {
 
     foreach my $iface (sort keys $interfaces->%*) {
         my $if = $interfaces->{$iface};
-        my $name = defined($netif_pin_map) ? $netif_pin_map->{ $if->{mac} } : $if->{name};
+        my $name =
+            defined($netif_pin_map)
+            && defined($netif_pin_map->{ $if->{mac} })
+            ? $netif_pin_map->{ $if->{mac} }
+            : $if->{name};
 
         next if $name eq $ethdev;
 
-- 
2.55.0