Okay, throwing this up here because I'm missing something, a bit of a n00b, and maybe just slow and stupid.
I had previously implemented ipvlan in Docker. Then I added a NIC (eth1) and implemented the "two-nic solution" to move back to macvlan. Seemed fine.
I updated to 6.12.4-rc18 and made what I thought were the recommended changes. I ended up redefining some of the networking for Docker, as this sort of broke all my previous br1 bridges. No worries, really.
But, I seem to have Docker on eth0 custom network now. Can I move it to eth1 and if so, how? What am I missing?
Here's my setup...
*note I tried to add routhing for eth1 here but it didn't save.