Openbsd 6.9 Default gateway

[Irshad Sulaiman]

Hi
How to set only one default gateway if I have multiple interface , one is in DHCP and other in Static ip
I have set /etc/mygate 192.168.100.1 and hostname.em0 (DHCP) and hostname.iwn0 (static 192.168.100.163 255.255.255.0)

But when I sh /etc/netstart it sets multiple gateway with following
Internet:

Destination Gateway Flags Refs Use Mtu Prio Iface
default 192.168.1.1 UGS 0 37 - 8 em0
default 192.168.100.1 UGS 0 0 - 12 iwn0

Only iwn0 have internet and I cannot connect to internet

How to set hostname.iwn0 as default gateway

With multiple default gateway I cannot ping outside


Appreciate

[l***@mailbox.org]

Post by Irshad Sulaiman
How to set hostname.iwn0 as default gateway

Probably there is a better solution. Maybe someone with more
knowledge of netstart can help. I'd try my luck with pf and create
a natting rule to check for traffic leaving em0 that's not - for
example - 192.168.1.0/24:

pass out on em0 from $int_net to ! $int_net received-on em0 nat-to iwn0

Didn't have the time to check this rule though.

[Irshad Sulaiman]

Thank you for the reply


I could do by
Delete and adding route with route command manually
But is there any better way to do this

Post by l***@mailbox.org

Post by Irshad Sulaiman
How to set hostname.iwn0 as default gateway

Probably there is a better solution. Maybe someone with more
knowledge of netstart can help. I'd try my luck with pf and create
a natting rule to check for traffic leaving em0 that's not - for
pass out on em0 from $int_net to ! $int_net received-on em0 nat-to iwn0
Didn't have the time to check this rule though.

[Daniel Jakots]

On Sat, 8 May 2021 02:37:41 +0300, Irshad Sulaiman

Post by Irshad Sulaiman
Thank you for the reply
I could do by
Delete and adding route with route command manually
But is there any better way to do this

If you used the same network both on wired and wireless, you could use
a trunk(4) in failover mode for a transparent transition. Check
"Trunking Your Wireless Adapter" in
https://www.openbsd.org/faq/faq6.html

Cheers,
Daniel

[Irshad Sulaiman]

Both in different Network , Just added route to hostname.if with -priority lower than other interface , it worked
Thank you

Post by Daniel Jakots
On Sat, 8 May 2021 02:37:41 +0300, Irshad Sulaiman

Post by Irshad Sulaiman
Thank you for the reply
I could do by
Delete and adding route with route command manually
But is there any better way to do this

If you used the same network both on wired and wireless, you could use
a trunk(4) in failover mode for a transparent transition. Check
"Trunking Your Wireless Adapter" in
https://www.openbsd.org/faq/faq6.html
Cheers,
Daniel

[Stuart Henderson]

Post by Irshad Sulaiman
Hi
How to set only one default gateway if I have multiple interface , one is in DHCP and other in Static ip
I have set /etc/mygate 192.168.100.1 and hostname.em0 (DHCP) and hostname.iwn0 (static 192.168.100.163 255.255.255.0)

Sounds like you want to request an address by DHCP, but ignore the gateway
handed out by the DHCP server; "ignore routers;" in dhclient.conf should
do the trick.

[Irshad Sulaiman]

Thank you
You are right

Irshad

Post by Stuart Henderson

Post by Irshad Sulaiman
Hi
How to set only one default gateway if I have multiple interface , one is in DHCP and other in Static ip
I have set /etc/mygate 192.168.100.1 and hostname.em0 (DHCP) and hostname.iwn0 (static 192.168.100.163 255.255.255.0)

Sounds like you want to request an address by DHCP, but ignore the gateway
handed out by the DHCP server; "ignore routers;" in dhclient.conf should
do the trick.