On Mon, Mar 20, 2023 at 05:15:57PM +0800, Jeremy Ardley wrote: > > On 20/3/23 16:39, Stanislav Vlasov wrote: > > пн, 20 мар. 2023 г. в 12:33, <f...@dnsbed.com>: > > > > > I have a networking question that I can't understand for. > > > I have the Debian 11 host with two ethernet cards. > > > There is public IP and gateway for each ethernet card. > > > (they are public IPs from two different net address blocks.) > > [...] > > > When clients from outside access eth1 ip (such as HTTP access), they can > > > reach there. > > > But, the returned packages from debian server to clients are always > > > coming from eth0 gw. > > > I expect the returned package also come from eth1 gw (since clients are > > > accessing eth1 address). > > > > https://lartc.org/ will help you. > > Exactly https://lartc.org/howto/lartc.rpdb.multiple-links.html > > In my same setup i was add some 'up ip rule add ...' lines into > > /etc/network/interfaces > > I get the impression the problem is to send return traffic back out on the > interface it came in on.
If this is it, then rp_filter, as I proposed elsewhere in this thread, seems like exactly made for this. Cheers -- t
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