Is firewall Connection Tracking or NAT in any way linked to upstream interface in RouterOS?
I mean, we plan to multihome with ISP1 and ISP2 and announce the same /24 to both ISPs, and want to srcnat outbound traffic from a private network behind one of the public addresses in the /24.
Default gateway is via ISP1, which is the main uplink we use, but based on BGP I assume it may happen that a reply to an outbound session via ISP1 finds its way back via ISP2 instead.
I have seen the documentation about rp-filter and ensured it is left at 'no'.
Will this work, or is anything in the firewall expecting a fully symmetric routing that would break this?