diff --git a/scripts/install_pve.sh b/scripts/install_pve.sh
index 40a4dfb..a62541b 100644
--- a/scripts/install_pve.sh
+++ b/scripts/install_pve.sh
@@ -802,6 +802,9 @@ if [ ! -f /usr/local/bin/pve_ipv6_prefixlen ] || [ ! -s /usr/local/bin/pve_ipv6_
 fi
 if [ ! -f /usr/local/bin/pve_ipv6_gateway ] || [ ! -s /usr/local/bin/pve_ipv6_gateway ] || [ "$(sed -e '/^[[:space:]]*$/d' /usr/local/bin/pve_ipv6_gateway)" = "" ]; then
     ipv6_gateway=$(ip -6 route show | awk '/default via/{print $3}' | head -n1)
+    if [[ "${ipv6_gateway: -2}" == "::" ]]; then
+        ipv6_gateway="${ipv6_gateway}0000"
+    fi
     echo "$ipv6_gateway" >/usr/local/bin/pve_ipv6_gateway
 fi
 ipv6_address=$(cat /usr/local/bin/pve_check_ipv6)