Kenneth Porter via Bloat <bloat@lists.bufferbloat.net> wrote:
> script in /etc/cron.hourly or a systemd timer unit). speedtest-cli
> accepts a --source option but it wants to always route through the WAN
> link set to the default route when I specify the addresses of the other
> two. From googling around it looks like I want to run it in a "network
> namespace" but I haven't figured out how to make that work.A new network namespace would certainly work, but it may be unmanageable overkill. What you probably need are policy-based routes, which you can establish statically and then --source ought to work. ip route now has a "from" option, but it doesn't always work in my experience. The old way is to do: ip rule add from A.B.C.D/32 table 123 ip route add default via 192.0.1.2 table 123 I put these into "up" statements into my /etc/network/interfaes, but you say you are running RHEL... I'm sure that there is a netplan way. This also means that if you have a monitoring system elsewhere (smokeping or something), and you ping each interface, then it will reply on that interface.
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