diff --git a/repos/libports/run/nic_dump.run b/repos/libports/run/nic_dump.run
index 7c91f0573..8e54a71ea 100644
--- a/repos/libports/run/nic_dump.run
+++ b/repos/libports/run/nic_dump.run
@@ -261,6 +261,6 @@ proc nic_qemu_args { } {
 	if {[have_spec x86]}     { return "-net nic,model=e1000" }
 	if {[have_spec lan9118]} { return "-net nic,model=lan9118" } }
 
-append qemu_args "-nographic -net user -redir udp:5555::1337 [nic_qemu_args]"
+append qemu_args "-nographic -net user [nic_qemu_args]"
 
 run_genode_until {.*Test done.*\n.*Test done.*\n} 60
diff --git a/repos/libports/run/nic_router.run b/repos/libports/run/nic_router.run
index 358aec5b7..578d9d163 100644
--- a/repos/libports/run/nic_router.run
+++ b/repos/libports/run/nic_router.run
@@ -283,6 +283,6 @@ proc nic_qemu_args { } {
 	if {[have_spec x86]}     { return "-net nic,model=e1000" }
 	if {[have_spec lan9118]} { return "-net nic,model=lan9118" } }
 
-append qemu_args "-nographic -net user -redir udp:5555::1337 [nic_qemu_args]"
+append qemu_args "-nographic -net user [nic_qemu_args]"
 
 run_genode_until {.*Test done.*\n.*Test done.*\n.*Test done.*\n.*Test done.*\n.*Test done.*\n.*Test done.*\n} 60