---
src/PVE/INotify.pm | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/PVE/INotify.pm b/src/PVE/INotify.pm
index 0dae177..70c34b1 100644
--- a/src/PVE/INotify.pm
+++ b/src/PVE/INotify.pm
@@ -914,6 +914,10 @@ sub __read_etc_network_interfaces {
my $f = { method => $3 }; # by family, merged to $d with a $suffix
(my $suffix = $family) =~ s/^inet//;
+ foreach my $existing_family (@{$ifaces->{$i}->{'families'}}) {
+ die "interface $i with family $family already exist" if $family
eq $existing_family;
+ }
+
my $d = $ifaces->{$i} ||= {};
$d->{priority} = $priority++ if !$d->{priority};
push @{$d->{families}}, $family;
--
2.11.0
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