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-rw-r--r--tests/topotests/munet/cli.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/topotests/munet/cli.py b/tests/topotests/munet/cli.py
index f58ea99d67..fc88dc320a 100644
--- a/tests/topotests/munet/cli.py
+++ b/tests/topotests/munet/cli.py
@@ -93,7 +93,7 @@ def spawn(unet, host, cmd, iow, ns_only):
elif master_fd in r:
o = os.read(master_fd, 10240)
if o:
- iow.write(o.decode("utf-8"))
+ iow.write(o.decode("utf-8", "ignore"))
iow.flush()
finally:
# restore tty settings back