On Fri, Nov 4, 2011 at 7:59 AM, Ivan Shmakov <i...@gray.siamics.net> wrote:
>>>>>> Axton <axton.gr...@gmail.com> writes:
>
> (Please also consider joining the news:comp.os.linux.networking
> and news:alt.os.linux.debian Usenet newsgroups. In particular,
> these are available via the free http://Aioe.org/ service, as
> well as through http://groups.google.com/.)
>
> > To add to this, the following results in a /etc/network/run/ifstate
> > that does not show eth1:
>
> There's a generic reason of ifstate not being updated after an
> ifup(8) invocation due to a failed pre-up or post-up command.
> Thus, I'd try to debug this problem by running ifup(8) with
> --verbose, like:
>
> # ifup -v eth1
>
> Such a command would likely to point out the failed command.
>
> Please note that it may be necessary to manually deconfigure the
> now-misconfigured interface before invoking ifup(8) (as in:
> # ip addr del.)
>
> > root@ntp01:/# cat /etc/network/interfaces
> > auto lo
> > iface lo inet loopback
>
> > auto eth1
>
> > iface eth1 inet static
> > address 10.0.4.240
> > netmask 255.255.252.0
> > broadcast 10.0.7.255
>
> There's little point in specifying a broadcast address
> coinciding with the one that'd be the default for this
> configuration.
>
> > gateway 10.0.4.1
>
> > iface eth1 inet6 static
> > address 2001:740:7063:10::240
> > netmask 64
> > gateway 2001:740:7063:10::10
> > pre-up echo 0 > /proc/sys/net/ipv6/conf/eth1/autoconf
> > pre-up echo 0 > /proc/sys/net/ipv6/conf/eth1/accept_ra
>
> Why not to use # sysctl -w here instead? Also, using explicit
> interface names in these commands may lead to hard to debug
> issues when fragments are moved or copied between different
> iface stanzas, especially if the interface names look similar.
>
> Thus:
>
> pre-up sysctl -w net.ipv6.conf."$IFACE".accept_ra=0
>
> > root@ntp01:/# cat /etc/network/run/ifstate
> > lo=lo
>
> > The interfaces are configured as follows with the above
> > configuration:
>
> Then it's my guess that the interface wasn't correctly
> deconfigured before invoking ifup(8). (It might've been a
> failed pre-up command, but then the interface wouldn't have been
> assigned the addresses.)
>
> […]
>
> --
> FSF associate member #7257
Thanks for the reply. I was able to get this all working. The issue,
and what I failed to mention in my original post, is that this machine
is an OpenVZ container. In order to manipulate the routes in the
container it requires the following capabilities:
vzctl set CTID --capability net_admin:on --save
ip resulted in errors without this capability.
I appreciate the feedback on using the $IFACE variable and sysctl. I
was not aware of the IFACE variable and will incorporate it into the
interfaces file. With the changes, I am able to ifup and ifdown any
interface and the state of the interfaces are properly reflected in
ifstate.
This is the final interfaces file:
root@ntp01:/# cat /etc/network/interfaces
# Used by ifup(8) and ifdown(8). See the interfaces(5) manpage or
# /usr/share/doc/ifupdown/examples for more information.
auto lo eth1 eth2 eth3 eth4
iface lo inet loopback
iface eth1 inet static
address 10.0.4.240
netmask 255.255.252.0
broadcast 10.0.7.255
post-up ip route add table 100 to 10.0.4.0/22 dev eth1
post-up ip route add table 100 to default via 10.0.4.1 dev eth1
post-up ip rule add from 10.0.4.0/22 table 100 priority 100
post-up ip route flush cache
pre-down ip route del table 100 to 10.0.4.0/22 dev eth1
pre-down ip rule del from 10.0.4.0/22 table 100 priority 100
pre-down ip route flush cache
iface eth1 inet6 static
address 2001:xxxx:xxxx:10::240
netmask 64
pre-up echo 0 > /proc/sys/net/ipv6/conf/eth1/autoconf
pre-up echo 0 > /proc/sys/net/ipv6/conf/eth1/accept_ra
post-up ip -6 route add table 100 to 2001:xxxx:xxxx:10::/64 dev eth1
post-up ip -6 route add table 100 to default via
2001:xxxx:xxxx:10::10 dev eth1
post-up ip -6 rule add from 2001:xxxx:xxxx:10::/64 table 100
priority 100
post-up ip -6 route flush cache
pre-down ip -6 rule del from 2001:xxxx:xxxx:10::/64 table 100
priority 100
pre-down ip -6 route flush cache
iface eth2 inet static
address 10.0.0.240
netmask 255.255.252.0
broadcast 10.0.3.255
post-up ip route add table 200 to 10.0.0.0/22 dev eth2
post-up ip route add table 200 to default via 10.0.0.1 dev eth2
post-up ip rule add from 10.0.0.0/22 table 200 priority 200
post-up ip route flush cache
pre-down ip rule del from 10.0.0.0/22 table 200 priority 200
pre-down ip route flush cache
iface eth2 inet6 static
address 2001:xxxx:xxxx:20::240
netmask 64
pre-up echo 0 > /proc/sys/net/ipv6/conf/eth2/autoconf
pre-up echo 0 > /proc/sys/net/ipv6/conf/eth2/accept_ra
post-up ip -6 route add table 200 to 2001:xxxx:xxxx:20::/64 dev eth2
post-up ip -6 route add table 200 to default via
2001:xxxx:xxxx:20::10 dev eth2
post-up ip -6 rule add from 2001:xxxx:xxxx:20::/64 table 200
priority 200
post-up ip -6 route flush cache
pre-down ip -6 rule del from 2001:xxxx:xxxx:20::/64 table 200
priority 200
pre-down ip -6 route flush cache
iface eth3 inet static
address 10.0.16.240
netmask 255.255.252.0
broadcast 10.0.19.255
post-up ip route add table 300 to 10.0.16.0/22 dev eth3
post-up ip route add table 300 to default via 10.0.16.1 dev eth3
post-up ip rule add from 10.0.16.0/22 table 300 priority 300
post-up ip route flush cache
pre-down ip rule del from 10.0.16.0/22 table 300 priority 300
pre-down ip route flush cache
iface eth3 inet6 static
address 2001:xxxx:xxxx:30::240
netmask 64
pre-up echo 0 > /proc/sys/net/ipv6/conf/eth3/autoconf
pre-up echo 0 > /proc/sys/net/ipv6/conf/eth3/accept_ra
post-up ip -6 route add table 300 to 2001:xxxx:xxxx:30::/64 dev eth3
post-up ip -6 route add table 300 to default via
2001:xxxx:xxxx:30::10 dev eth3
post-up ip -6 rule add from 2001:xxxx:xxxx:30::/64 table 300
priority 300
post-up ip -6 route flush cache
pre-down ip -6 rule del from 2001:xxxx:xxxx:30::/64 table 300
priority 300
pre-down ip -6 route flush cache
iface eth4 inet static
address 10.0.20.240
netmask 255.255.252.0
broadcast 10.0.23.255
gateway 10.0.20.1
post-up ip route add table 400 to 10.0.20.0/22 dev eth4
post-up ip route add table 400 to default via 10.0.20.1 dev eth4
post-up ip rule add from 10.0.20.0/22 table 400 priority 400
post-up ip route flush cache
pre-down ip route del table 400 to 10.0.20.0/22 dev eth4
pre-down ip route del table 400 to default via 10.0.20.1 dev eth4
pre-down ip rule del from 10.0.20.0/22 table 400 priority 400
pre-down ip route flush cache
iface eth4 inet6 static
address 2001:xxxx:xxxx:40::240
netmask 64
gateway 2001:xxxx:xxxx:40::10
pre-up echo 0 > /proc/sys/net/ipv6/conf/eth4/autoconf
pre-up echo 0 > /proc/sys/net/ipv6/conf/eth4/accept_ra
post-up ip -6 route add table 400 to 2001:xxxx:xxxx:40::/64 dev eth4
post-up ip -6 route add table 400 to default via
2001:xxxx:xxxx:40::10 dev eth4
post-up ip -6 rule add from 2001:xxxx:xxxx:40::/64 table 400
priority 400
post-up ip -6 route add default via 2001:xxxx:xxxx:40::10 metric 0
post-up ip -6 route flush cache
pre-down ip -6 rule del from 2001:xxxx:xxxx:40::/64 table 400
priority 400
pre-down ip -6 route flush cache
Thanks,
Axton Grams
--
To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
Archive:
http://lists.debian.org/CAJeeBBzCEtww9k6Us=u_dh1z1yejcgukgdwp-6a7mxust_w...@mail.gmail.com
