Douai: update network interface name for newest Linux kernel

dnsmasq_douai.sh

@@ -87,12 +87,20 @@ allow-hotplug eno1
 iface eno1 inet static
   address 192.168.46.$(( 50 + $i ))/24
 
+# name for older Linux kernel
 allow-hotplug enp193s0f1
 iface enp193s0f1 inet static
   address 195.90.118.$(( 194 + $i ))/27
   gateway 195.90.118.193
   dns-nameservers 1.1.1.1 8.8.8.8
 
+# name for newest Linux kernel (>= 5.10)
+allow-hotplug enp193s0f1np1
+iface enp193s0f1np1 inet static
+  address 195.90.118.$(( 194 + $i ))/27
+  gateway 195.90.118.193
+  dns-nameservers 1.1.1.1 8.8.8.8
+
 #allow-hotplug enp193s0f0
 #iface enp193s0f0 inet dhcp