Understand linux bridge tunneling configuration

Asked Jun 20 '19 at 15:13

Active Jun 20 '19 at 15:33

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I have a VPN software that creates a tap device connected to a bridge:

$ brctl show vpnbr
  bridge name   bridge id       STP enabled interfaces
  vpnbr     8000.6630fabc3f2b   yes     tnl-2c5a50e

$ brctl showmacs vpnbr
  port no   mac addr        is local?   ageing timer
    1   66:30:fa:bc:3f:2b   yes        0.00

What is a logic behind connecting single TAP to a bridge? I would expect multiple ports to be connected to the bridge. Why to use a bridge in a first place?

asked Jun 20 '19 at 15:13

alnet

What exactly this software is? It looks like a configuration mistake. – taliano Jun 20 '19 at 15:33
It's a VPN software. The configuration isn't a mistake. The tunnel works. Maybe it's related to NAT translation in some way? – alnet Jun 20 '19 at 16:21
What VPN software is this? – Michael Hampton Jun 20 '19 at 18:13

Understand linux bridge tunneling configuration

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