netdev - Re: [EXT] tc-mirred : Redirect Broadcast (like ARP) pkts rcvd on eth1 towards eth0

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Message-ID: <0b2bdc15-b76b-4003-ba1d-e16049c7809b@mojatatu.com>
Date: Wed, 17 Jan 2024 18:40:43 -0300
From: Pedro Tammela <pctammela@...atatu.com>
To: Vikas Aggarwal <vik.reck@...il.com>, Suman Ghosh <sumang@...vell.com>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
 "jhs@...atatu.com" <jhs@...atatu.com>
Subject: Re: [EXT] tc-mirred : Redirect Broadcast (like ARP) pkts rcvd on eth1
 towards eth0

On 17/01/2024 16:15, Vikas Aggarwal wrote:
> Thanks Suman that works.
> I need similar "redirect rule" on egress side.  Suppose if i do udhcpc
> -i eth1  then I want  DHCP to resolve via eth0.
> Syntax on egress (root) side is different and more complicated and I
> need to learn egress syntax.
> I am trying to tc filter + mirror  based on udp and DHCP port 67-68 .
> Can you please help with this  egress side DHCP redirect too.
> Thanks Again
> Vikas
> 

tc qdisc add $ETH clsact
tc filter add dev $ETH egress ...