diff --git a/debian/wit-network-config.postinst b/debian/wit-network-config.postinst
index 7c11508..75184f2 100755
--- a/debian/wit-network-config.postinst
+++ b/debian/wit-network-config.postinst
@@ -84,7 +84,7 @@ case "$1" in
 		    pre-up /bin/ip link set up dev mgmt
 		    pre-up /bin/ip link set master mgmt dev mgmt1
 		    post-down /bin/ip link del dev mgmt
-		iface mgmt1 inet6 dhcp
+		iface mgmt1 inet6 auto
 	EOF
 
 	cat <<-"EOF" >/etc/network/interfaces.d/feth