Re: Google Compute Engine networking stopped working

[Roy Marples <roy%marples.name@localhost>]

On 21/08/2017 18:34, Benny Siegert wrote:
> > > GCE Networking has DHCP return a host address with a /32 netmask, plus
> > > a gateway with a different address. The trick is that you also need a
> > > host route to the gateway, directly over the interface.
> >
> > Then GCE Networking should also set a static route to the gateway like
> > so (where the gateway IP is 1.2.3.4):
> >          1.2.3.4 1.2.3.4
> >
> > Or via a CSR option:
> >          32/1.2.3.4 1.2.3.4
>
> It comes via a classless static route:
>
> # dhcpcd -U vioif0
> broadcast_address=10.240.0.2
> classless_static_routes='10.240.0.1/32 0.0.0.0 0.0.0.0/0 10.240.0.1'
> dhcp_lease_time=86400
> dhcp_message_type=5
> dhcp_server_identifier=169.254.169.254
> domain_name=c.gobuilder-bsiegert.internal
> domain_name_servers=169.254.169.254
> domain_search='c.gobuilder-bsiegert.internal google.internal'
> host_name=netbsd8-dhcptest.c.gobuilder-bsiegert.internal
> interface_mtu=1460
> ip_address=10.240.0.2
> network_number=10.240.0.2
> ntp_servers=169.254.169.254
> routers=10.240.0.1
> subnet_cidr=32
> subnet_mask=255.255.255.255
>
>
> Is it only taking the "routers" field into account and disregarding
> the classless_static_routes?

Over way around :)
If classless_static_routes is present then dhcpcd ignores both routers 
and static_routes.

From the looks of it, this should already be fixed in -current where we 
have dhcpcd-7.0.0-rc1

Can you test that please, or if that fails my latest git trunk?

Roy