Lee wrote: > > Or you can just configure the wired ethernet connection to have a > lower (better) routing metric than the wireless connection. That way > the machine always uses the wired connection if it's up and uses the > wireless connection when the wired connection is down. > > There's probably a nice and easy way to do that by changing > /etc/network/something .. I never figured out how to do it that way & > used the 'Advanced Network Configuration' gui tool to set the wired > connection 'Connect automatically with priority' to -999 > > With the ethernet cable connected to the laptop, 'ip route' shows wls1 > with a metric of 600 and enp1s0 with a metric of 100. > With the ethernet cable disconnected the only thing that 'ip route' > shows is wls1. > Yay! automatic failover + automatic selection of the faster interface > when it's up :-)
This will generally work, but it does have a drawback: you have two different IPs, so when a change happens, all your existing connections will drop and new inbound connections will only work on the NIC that's up. You'll also need to replicate firewall rules on each NIC. -dsr-
