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Oleksandr Mazur 145f8aba82 Fixup scripts: make sure uplink iface (port) is dhcp trusted
With the DHCP-snooping full support for the BRCM platforms
it's needed for the ports to be marked either trusted/untrusted
to make sure proper DHCP request/reply forwarding occurs.

With this commit the following behavior is enforced:
 * Every port is untrusted by default upon device startup;
 * Uplink interface (port) is determined through the means of
   parsing ARP+FBD table;
 * DHCP trust is enabled only for the uplink port;
 * All vlan members can now send DHCP discover(s), which
   will be forwarded (flooded) to trusted ports (in our
   case to a single trusted uplink port) and get
   their replies back.

Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
2024-04-16 16:30:01 +03:00
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