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add hub mode comment

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Signed-off-by: Philippe Schaaf <philippe.schaaf@secunet.com>
This commit is contained in:
Philippe Schaaf 2022-07-21 16:34:09 +02:00
parent df52d556bb
commit 5ae6580474
1 changed files with 4 additions and 0 deletions
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4
nixos/lib/test-driver/test_driver/vlan.py
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@ -32,6 +32,10 @@ class VLan:
rootlog.info("start vlan")
pty_master, pty_slave = pty.openpty()
# The --hub is required for the scenario determined by
# nixos/tests/networking.nix vlan-ping.
# VLAN Tagged traffic (802.1Q) seams to be blocked if a vde_switch is
# used without the hub mode (flood packets to all ports).
self.process = subprocess.Popen(
["vde_switch", "-s", self.socket_dir, "--dirmode", "0700", "--hub"],
stdin=pty_slave,