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gentoorock
n00b
Joined: 12 Mar 2017
Posts: 2
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 Posted: Sun Mar 12, 2017 5:33 pm Post subject: What's the rtnetlink behavior if adding or removing ethernet |
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Hello All,
While I am studying on RTNETLINK, I understand that the kernel will send RTM_ADDLINK or RTM_DELLINK if interface is added/removed at kernel space. However, I have a question regarding to the RTNETLINK message if adding or removing ethernet to/from bridge? Since adding or removing ethernet to / from bridge is not actually adding or removing interface, is there any RTNETLINK message actually transferring in between? |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Sun Mar 12, 2017 9:33 pm Post subject: |
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| The presence and contents of /usr/src/linux/net/bridge/br_netlink.c suggests that it does. |
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gentoorock
n00b
Joined: 12 Mar 2017
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| Posted: Mon Mar 13, 2017 8:33 am Post subject: |
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| Ant P. wrote: | | The presence and contents of /usr/src/linux/net/bridge/br_netlink.c suggests that it does. |
Thanks for the help! However, is this the right behavior? Bridge is layer 2 concept but I suppose RTNETLINK is only handling above layer 3 event, or I might be wrong. Removing interface from bridge actually triggers the RTM_DELLINK so my routing daemon thought an interface is removed while it's actually not. |
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