Okay, I have an update on this.

Note that wlp3s0 is the WireLess adapter and enp0s2 is the wired
Ethernet adapter.

Given the /etc/conf.d/net as shown below (i.e. only config_wlp3s0="dhcp")

1. If there is *no* /etc/init.d/net.enp0s2 link (or any adapter link),
   then the wireless connection comes up with a dhcp-derived address
2. if there *is* an /etc/init.d/net.enp0s2 link, and the same
   /etc/conf.d/net file:
    1. the wireless comes up with no address (and no dhcp attempt in
       /var/log/syslog)
    2. The wired adapter has a (dhcp-derived) zero-conf address or
       something, at 169.
3. if a fixed ip address is additionally specified for the wired
   adapter in /etc/conf.d/net
    1. it is assigned as specified
    2. No attempt is made to run dhcp on the wireless anymore (although
       dhcp *is* specified for it in /etc/conf.d/net)

The thing is, before my root filesystem got crashed by a negligent ext4
recovery, the system came up multi-homed, with a static and a
dhcp-derived address.
Coming from 4.9.? to 4.19.72.

Could it be that something changed?


On 12/19/19 08:46, n952162 wrote:
I have this line in /etc/conf.d/net:

config_wlp3s0="dhcp"

given:

$ifconfig wlp3s0
wlp3s0    Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx
          inet addr:192.168.178.42 Bcast:192.168.178.255
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500 Metric:1
          RX packets:2008 errors:0 dropped:0 overruns:0 frame:0
          TX packets:335 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:619501  TX bytes:40551

but I still have to manually start dhcpcd (now, after installing kernel
4.19.72).

Another problem - wpa_supplicant then defines a default gateway, even
though one already existed for the wired connection:

config_enp2s0="192.168.179.20 netmask 255.255.255.0 brd 192.168.179.255"
routes_enp2s0="default via 192.168.179.24"

I have to then manually delete that when I'm on wireless.  That all
happened automatically before.  I wonder how I broke that all.



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