Re: restarting network

[Tony van der Hoff <tony@vanderhoff.org>]

On 29/03/16 16:25, Reco wrote:
> 	Hi.
>
> On Tue, 29 Mar 2016 15:44:16 +0100
> Tony van der Hoff <tony@vanderhoff.org> wrote:
> > > And - you have yet another default gateway for eth1.
> > > No wonder that the kernel refuses to add the same route second time.
> > >
> > > Reco
> >
> > Thanks, Reco.
> > I've now commented out that line for eth1, but I still get
> >
> > Mar 29 15:37:47 tony-lx networking[24921]: Failed to bring up eth1.
> > Mar 29 15:37:47 tony-lx networking[24921]: done.
>
> Now *that* requires actual investigation.
>
> What does the following sequence yield:
>
> ifdown -v eth1
root@tony-lx:~# ifdown -v eth1
ifdown: interface eth1 not configured
root@tony-lx:~#

> ifquery eth1
root@tony-lx:~# ifquery eth1
address: 192.168.2.8
netmask: 255.255.255.0
network: 192.168.2.0
broadcast: 192.168.2.255
up: ip addr add dev eth1 2001:8b0:ff60:6a91::8
up: ip route add default via fe80::1 dev eth0
dns-nameservers: 192.168.1.1
dns-search: magpieway.net
root@tony-lx:~#

> ip a l dev eth1
root@tony-lx:~# ip a l dev eth1
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast 
state UP group default qlen 1000
    link/ether bc:ae:c5:29:77:d8 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.8/24 brd 192.168.2.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet6 2001:8b0:ff60:6a91::8/128 scope global
       valid_lft forever preferred_lft forever
    inet6 fe80::beae:c5ff:fe29:77d8/64 scope link
       valid_lft forever preferred_lft forever
root@tony-lx:~#

> ifup -v eth1
root@tony-lx:~#  ifup -v eth1
Configuring interface eth1=eth1 (inet)
run-parts --exit-on-error --verbose /etc/network/if-pre-up.d
run-parts: executing /etc/network/if-pre-up.d/wpasupplicant
ip addr add 192.168.2.8/255.255.255.0 broadcast 192.168.2.255     dev 
eth1 label eth1
RTNETLINK answers: File exists
Failed to bring up eth1.
root@tony-lx:~#

> ip a l dev eth1
root@tony-lx:~# ip a l dev eth1
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast 
state UP group default qlen 1000
    link/ether bc:ae:c5:29:77:d8 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.8/24 brd 192.168.2.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet6 2001:8b0:ff60:6a91::8/128 scope global
       valid_lft forever preferred_lft forever
    inet6 fe80::beae:c5ff:fe29:77d8/64 scope link
       valid_lft forever preferred_lft forever
root@tony-lx:~#

I guess, if it never goes down, it can never come up

Cheers,
--
Tony van der Hoff        | mailto:tony@vanderhoff.org
Buckinghamshire, England |