The network problem is fixed now
	traceroute to isoptera now
	Explanation
	Zac's observation, and the loop

A note:  What happens if you set an incorrect primary DNS server?
	We'll set nikabrik back to that configuration

Something I need to remember to try:
	

Something I tried to show a while back:
	Using strange subnet masks, etc. in the lab
	Automatic bits:
		dhcp
		NetworkManager (network-manager in package tree)
			https://ubuntu.com/core/docs/networkmanager
			network-manager is a dependency of ubuntu-desktop
	
I set one up weird already, so let's look at it a little
	Should be on 192.168.18.180
	Can we get to it from the instructor station?
	Can we get to it from wormtongue?  
	How about nikabrik?

Alright:  Can we put one on 192.168.17.?
	How would we get to it?
	
Interlude:  Link-local and IPv6
	The IPv6 address space is larger than the MAC address space
	So big that the host part can be larger than the MAC address space
	We could just let computers make up their own host portion
		Or use their MAC address or whatever
	That's the FE80::/10 block
	Called link-local
	Not globally routed
	OpenSSH weird caveat:  Must identify interface to send from
		Localhost also has a link-local address!
		Could be on a bunch of link-local networks

Back to subnet masks, 192.168 in the lab, etc.
	Can we use 192.168 as a class B?
	Getting to the computers is good, but can we get out?
	DNS?
	A prison for your mind
	If I ever have to give a motivational speech...

Funny little note:  Different IP range vs. vlan
	You can have two vlans with the same IP range
		The switch will happily keep them separate
	vlans can provide some security
		The switch actually won't pass traffic from one to the other
	vlans reduce broadcast scope
	vlans reduce layer 2 scope
	Hosts are blissfully ignorant of what vlan they're on
		We've been using different IP ranges and routing between them

Something to set up one of these days:
	Two networks that can't see each other
	They can all see a server somewhere
	The server can't directly connect to them
	It'll need Network Address Translation (NAT)
		"ip nat inside" from interface config