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-rw-r--r--lib/common-functions.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/common-functions.sh b/lib/common-functions.sh
index dfac008e..d01f7918 100644
--- a/lib/common-functions.sh
+++ b/lib/common-functions.sh
@@ -154,7 +154,7 @@ function detach_interface_from_ovs {
if_dns2=$(sed -n 's/^DNS2=\(.*\)$/\1/p' ${net_path}/ifcfg-${bridge})
if [ -z "$if_mask" ]; then
- if_prefix=$(sed -n 's/^PREFIX=\(.*\)$/\1/p' ${net_path}/ifcfg-${bridge})
+ if_prefix=$(sed -n 's/^PREFIX=[^0-9]*\([0-9][0-9]*\)[^0-9]*$/\1/p' ${net_path}/ifcfg-${bridge})
if_mask=$(prefix2mask ${if_prefix})
fi