Re: dhclient.conf alias declarations?
On Mon, Jul 27, 2015 at 01:34:09PM +0300, Kimmo Paasiala wrote: ...I can live without the alias address, it would have been a convinient way to access the ADSL modem on the WAN side from inside the LAN network. Perhaps you could add an ifconfig(8) command to rc.local(8) to set the alias. Or, you might be able to do what you desire with isc-dhcp-client.
Re: dhclient.conf alias declarations?
...I can live without the alias address, it would have been a convinient way to access the ADSL modem on the WAN side from inside the LAN network. Perhaps you could add an ifconfig(8) command to rc.local(8) to set the alias. As previously said any ifconfig aliasing command removes the DHCP obtained configuration which breaks the expected address reception from the DHCP server. Currently at the moment it's either DHCP or have alias, or not documented / known to me how to solve it. Please consider this real scenario. Sometimes it's not possible to reach the modem if it uses the so called IP extension to pass the external IP by DHCP (in the modem) to the OpenBSD box external interface. In this case, not having the option to manually add the alias declaration in the hostname.if leaves you without connection to the modem LAN interface. This is a deal breaker as not being able to control the modem you lose chances of resetting it when it stops passing traffic, monitor stats, logs etc. Not to mention the fact that it was not within reach how to set a default gateway on the OpenBSD box assigned by the ISP as a static route upon DHCP reception of the external IP so that the OpenBSD box would be able to access the Internet. The gateway is a different IP with each lease and is not in the DHCP address space, so requires manual addition of the route to be able to reach it via the modem. This was the second show stopper and had to rest the case. If anyone had the same issue, please advise if it has a solution. This lead to abandon the passing of external IP address (IP extension) to the OpenBSD system and forced use of the NAT in the modem which is flawed anyway and can't handle that much connections due to its limited resources. So, sometimes the fact you can't use DHCP with aliasing another IP is not that easy to live with. One could imagine more use cases when DHCP and aliasing an IP is required. Please can someone say if this is possible to achieve using base dhclient? Or, you might be able to do what you desire with isc-dhcp-client. That's not nice to handle, and creates another set of problems. This does not solve the need to have a alias capability after / with dhclient in base.
Re: dhclient.conf alias declarations?
On 2015-07-26, Kimmo Paasiala kpaas...@gmail.com wrote:
Hello,
I'm in the process of migrating my router/firewall system from FreeBSD
to OpenBSD and I came across a minor problem. I want to have a static
alias address on an interface that is otherwise configured with DHCP.
What I had in FreeBSD was this entry in /etc/dhclient.conf:
alias {
interface vr0;
fixed-address 192.168.1.200;
option subnet-mask 255.255.255.0;
}
This seems to be silently ignored on OpenBSD 5.7 and the dhclient.conf
manual page makes no mention of alias declarations. How am I supposed
to achieve the same effect?
I need to do this sometimes too. The only way to do this with
dhclient(8) in recent versions of OpenBSD is to fetch the lease, pkill
-9 dhclient, then add the alias.
Otherwise use an alternative DHCP client from packages.
Re: dhclient.conf alias declarations?
On Mon, Jul 27, 2015 at 4:21 AM, Edgar Pettijohn
ed...@pettijohn-web.com wrote:
On 07/26/15 19:10, Kimmo Paasiala wrote:
On Mon, Jul 27, 2015 at 3:00 AM, Kimmo Paasiala kpaas...@gmail.com
wrote:
On Mon, Jul 27, 2015 at 2:33 AM, Josh Grosse j...@jggimi.homeip.net
wrote:
On 2015-07-26 19:12, Kimmo Paasiala wrote:
Hello,
I'm in the process of migrating my router/firewall system from FreeBSD
to OpenBSD and I came across a minor problem. I want to have a static
alias address on an interface that is otherwise configured with DHCP.
What I had in FreeBSD was this entry in /etc/dhclient.conf:
alias {
interface vr0;
fixed-address 192.168.1.200;
option subnet-mask 255.255.255.0;
}
This seems to be silently ignored on OpenBSD 5.7 and the dhclient.conf
manual page makes no mention of alias declarations. How am I supposed
to achieve the same effect?
-Kimmo
Perhaps something like this in your /etc/hostname.vr0 instead would work
for you?
dhcp
!ifconfig vr0 alias 192.168.1.200/32
No, doesn't work. Interestingly doing the alias manually when dhclient
is running and vr0 has a public IP address from DHCP:
sudo ifconfig vr0 alias 192.168.1.200/24
This kills dhclient(8) completely and removes the main address.
Any other ideas?
-Kimmo
The system log /var/log/messages reveals:
Jul 27 03:01:30 firewall dhclient[23894]: 192.168.1.200 added to vr0;
exiting
Why is this done in so bizarre fashion? It is not unusual to want to
have a static alias address on an interface that is otherwise
configured with DHCP.
-Kimmo
I can't test this, but from what I'm reading I think this should work
/etc/hostname.vr0
dhcp alias 192.168.1.200 netmask 255.255.255.0
Unfortunately that doesn't work either, ifconfig complains about
invalid options. It looks like you can only add media options etc.
with dhcp. I can live without the alias address, it would have been
a convinient way to access the ADSL modem on the WAN side from inside
the LAN network.
-Kimmo
Re: dhclient.conf alias declarations?
On 2015-07-26 19:12, Kimmo Paasiala wrote:
Hello,
I'm in the process of migrating my router/firewall system from FreeBSD
to OpenBSD and I came across a minor problem. I want to have a static
alias address on an interface that is otherwise configured with DHCP.
What I had in FreeBSD was this entry in /etc/dhclient.conf:
alias {
interface vr0;
fixed-address 192.168.1.200;
option subnet-mask 255.255.255.0;
}
This seems to be silently ignored on OpenBSD 5.7 and the dhclient.conf
manual page makes no mention of alias declarations. How am I supposed
to achieve the same effect?
-Kimmo
Perhaps something like this in your /etc/hostname.vr0 instead would work
for you?
dhcp
!ifconfig vr0 alias 192.168.1.200/32
Re: dhclient.conf alias declarations?
On Mon, Jul 27, 2015 at 3:00 AM, Kimmo Paasiala kpaas...@gmail.com wrote:
On Mon, Jul 27, 2015 at 2:33 AM, Josh Grosse j...@jggimi.homeip.net wrote:
On 2015-07-26 19:12, Kimmo Paasiala wrote:
Hello,
I'm in the process of migrating my router/firewall system from FreeBSD
to OpenBSD and I came across a minor problem. I want to have a static
alias address on an interface that is otherwise configured with DHCP.
What I had in FreeBSD was this entry in /etc/dhclient.conf:
alias {
interface vr0;
fixed-address 192.168.1.200;
option subnet-mask 255.255.255.0;
}
This seems to be silently ignored on OpenBSD 5.7 and the dhclient.conf
manual page makes no mention of alias declarations. How am I supposed
to achieve the same effect?
-Kimmo
Perhaps something like this in your /etc/hostname.vr0 instead would work
for you?
dhcp
!ifconfig vr0 alias 192.168.1.200/32
No, doesn't work. Interestingly doing the alias manually when dhclient
is running and vr0 has a public IP address from DHCP:
sudo ifconfig vr0 alias 192.168.1.200/24
This kills dhclient(8) completely and removes the main address.
Any other ideas?
-Kimmo
The system log /var/log/messages reveals:
Jul 27 03:01:30 firewall dhclient[23894]: 192.168.1.200 added to vr0; exiting
Why is this done in so bizarre fashion? It is not unusual to want to
have a static alias address on an interface that is otherwise
configured with DHCP.
-Kimmo
Re: dhclient.conf alias declarations?
On Mon, Jul 27, 2015 at 2:33 AM, Josh Grosse j...@jggimi.homeip.net wrote:
On 2015-07-26 19:12, Kimmo Paasiala wrote:
Hello,
I'm in the process of migrating my router/firewall system from FreeBSD
to OpenBSD and I came across a minor problem. I want to have a static
alias address on an interface that is otherwise configured with DHCP.
What I had in FreeBSD was this entry in /etc/dhclient.conf:
alias {
interface vr0;
fixed-address 192.168.1.200;
option subnet-mask 255.255.255.0;
}
This seems to be silently ignored on OpenBSD 5.7 and the dhclient.conf
manual page makes no mention of alias declarations. How am I supposed
to achieve the same effect?
-Kimmo
Perhaps something like this in your /etc/hostname.vr0 instead would work
for you?
dhcp
!ifconfig vr0 alias 192.168.1.200/32
No, doesn't work. Interestingly doing the alias manually when dhclient
is running and vr0 has a public IP address from DHCP:
sudo ifconfig vr0 alias 192.168.1.200/24
This kills dhclient(8) completely and removes the main address.
Any other ideas?
-Kimmo
dhclient.conf alias declarations?
Hello,
I'm in the process of migrating my router/firewall system from FreeBSD
to OpenBSD and I came across a minor problem. I want to have a static
alias address on an interface that is otherwise configured with DHCP.
What I had in FreeBSD was this entry in /etc/dhclient.conf:
alias {
interface vr0;
fixed-address 192.168.1.200;
option subnet-mask 255.255.255.0;
}
This seems to be silently ignored on OpenBSD 5.7 and the dhclient.conf
manual page makes no mention of alias declarations. How am I supposed
to achieve the same effect?
-Kimmo
Re: dhclient.conf alias declarations?
Look at hostname.if, for the vr0 interface, it would be called hostname.vr0
This is how you define aliases for a particular alias in OpenBSD.
-Original Message-
From: owner-m...@openbsd.org [mailto:owner-m...@openbsd.org] On Behalf Of Kimmo
Paasiala
Sent: Sunday, July 26, 2015 5:12 PM
To: misc@openbsd.org
Subject: dhclient.conf alias declarations?
Hello,
I'm in the process of migrating my router/firewall system from FreeBSD to
OpenBSD and I came across a minor problem. I want to have a static alias
address on an interface that is otherwise configured with DHCP.
What I had in FreeBSD was this entry in /etc/dhclient.conf:
alias {
interface vr0;
fixed-address 192.168.1.200;
option subnet-mask 255.255.255.0; }
This seems to be silently ignored on OpenBSD 5.7 and the dhclient.conf manual
page makes no mention of alias declarations. How am I supposed to achieve the
same effect?
-Kimmo
Re: dhclient.conf alias declarations?
On 07/26/15 19:10, Kimmo Paasiala wrote:
On Mon, Jul 27, 2015 at 3:00 AM, Kimmo Paasiala kpaas...@gmail.com wrote:
On Mon, Jul 27, 2015 at 2:33 AM, Josh Grosse j...@jggimi.homeip.net wrote:
On 2015-07-26 19:12, Kimmo Paasiala wrote:
Hello,
I'm in the process of migrating my router/firewall system from FreeBSD
to OpenBSD and I came across a minor problem. I want to have a static
alias address on an interface that is otherwise configured with DHCP.
What I had in FreeBSD was this entry in /etc/dhclient.conf:
alias {
interface vr0;
fixed-address 192.168.1.200;
option subnet-mask 255.255.255.0;
}
This seems to be silently ignored on OpenBSD 5.7 and the dhclient.conf
manual page makes no mention of alias declarations. How am I supposed
to achieve the same effect?
-Kimmo
Perhaps something like this in your /etc/hostname.vr0 instead would work
for you?
dhcp
!ifconfig vr0 alias 192.168.1.200/32
No, doesn't work. Interestingly doing the alias manually when dhclient
is running and vr0 has a public IP address from DHCP:
sudo ifconfig vr0 alias 192.168.1.200/24
This kills dhclient(8) completely and removes the main address.
Any other ideas?
-Kimmo
The system log /var/log/messages reveals:
Jul 27 03:01:30 firewall dhclient[23894]: 192.168.1.200 added to vr0; exiting
Why is this done in so bizarre fashion? It is not unusual to want to
have a static alias address on an interface that is otherwise
configured with DHCP.
-Kimmo
I can't test this, but from what I'm reading I think this should work
/etc/hostname.vr0
dhcp alias 192.168.1.200 netmask 255.255.255.0
