# Create tagged interface and bring it up, then add it to a bridge ip link add link eth0 name eth0.10 type vlan id 10 ip link set dev eth0.10 up brctl addbr br10 brctl addif br10 eth0.10

“Network is already in use by interface ” Threw me for a minute The issue was that an IP address specified in the Vagrant file was in use by the host i was using. Changed the IP’s in the vagrant file.. Problem solved ==> worker1: An error occurred. The error will be shown after all […]

When you need to scan an entire subnet for ‘research purposes’ and check for any associated PTR’s we can use Nmap   nmap -R -sL 103.112.200.0/22 > results.txt

Because this was WAAYY more difficult to find any decent doco on that I had ever expected, here is what worked for me I deleted the netplan config file at /etc/netplan/01-netcfg.yaml rm /etc/netplan/01-netcfg.yaml Ensure that ‘bonding’ appears in /etc/modules (I’s not here by default) echo bonding >> /etc/modules   Here is /etc/network/interfaces source-directory /etc/network/interfaces.d auto […]

I was having troubles adding a route using ip route, I was getting “Error: either “to” is duplicate, or “172.16.1.254” is a garbage.” [root@adlwest-nms1 ~]# ip route add 172.16.103.0/24 172.16.1.254 dev eth1 Error: either “to” is duplicate, or “172.16.1.254” is a garbage. But running ip route add subnet/netmask via gw worked [root@adlwest-nms1 ~]# ip route […]