[FS#490] BT Home Hub 5 Ethernet WAN Port configuration

[LEDE Bugs]

The following task has a new comment added:

FS#490 - BT Home Hub 5 Ethernet WAN Port configuration
User who did this - Mathias Kresin (mkresin)

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Hey Mauro,

please don't add patches to the bugtracker. Send this patch according to [[https://lede-project.org/docs/guide-developer/the-source-code#submitting_patches|Submitting Patches]] to get your changes included.

If you want to discuss an idea, it would be the best to send a mail to the [[https://lede-project.org/contact#mailing_lists|lede-dev mailing list]].

I've already prepared something similar, which should workaround FS#390 as well. Please have a look at these commits

  * lantiq: use xwan network name for xdsl wan
  * lantiq: xrx200: use vlan for ethernet wan port

in my [[https://git.lede-project.org/?p=lede/mkresin/staging.git;a=summary|staging repository]].

My first idea was to rename the networks wan/wan6 to ewan/ewan6 and use wan for xdsl/3G/4G connections. But that idea was not that appreciated by the other devs.

It's not yet in master since I see the following problems with the implemention:

  * it might be confusing if you want to make a service listen on any wan interface (interface assigned to either wan or xwan)
  * the wan network name could be hardcoded somewhere (config_get interface "wan")

The other idea I had, was to use a single network "wan" with multiple interfaces (ucidef_set_interface_wan "$interface_wan" "pppoe eth0.2" ). But when doing it this way, it is not possible to assign individual mac addresses to wan interfaces, since ucidef_set_interface_macaddr "wan" "$wan_mac" would set the same mac address for all interfaces in that network. Furthermore, it wouldn't be possible any longer to bind a service only to one specific wan interface (opposite use case to all wan interfaces are doing the same).

Maybe we can discuss my approach via mail and finish/test what I've done. Would be great to hear your opinion about the corner cases I do see. Might be that I'm seeing issue where no issues are.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=490#comment1692