diff --git a/bash_completion b/bash_completion
index 9b122cdeed3..ee78c185a7b 100644
--- a/bash_completion
+++ b/bash_completion
@@ -1727,9 +1727,11 @@ _comp_compgen_available_interfaces()
         if [[ ${1-} == -w ]]; then
             iwconfig
         elif [[ ${1-} == -a ]]; then
-            ifconfig || ip -c=never link show up || ip link show up
+            # long interface name may be truncated by ifconfig, prefer iproute2.
+            # See also: https://github.com/scop/bash-completion/issues/1089
+            ip -c=never link show up || ip link show up || ifconfig
         else
-            ifconfig -a || ip -c=never link show || ip link show
+            ip -c=never link show || ip link show || ifconfig -a
         fi
     } 2>/dev/null | _comp_awk \
         '/^[^ \t]/ { if ($1 ~ /^[0-9]+:/) { print $2 } else { print $1 } }')" &&