base-de-connaissances/documentation/how-to-delete-a-route-on-a-specific-interface.md

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How to delete a route on a specific interface? [closed]

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This question is . It is not currently accepting answers.

Questions should demonstrate reasonable business information technology management practices. Questions that relate to unsupported hardware or software platforms or unmaintained environments may not be suitable for Server Fault - see the help center.

Closed 10 years ago.

When I start a VPN connection, a new default route is added on the utun0 interface:

Destination        Gateway            Flags        Refs      Use   Netif Expire
default            utun0              UCS            21        0   utun0
default            192.168.43.1       UGScI          14        0     en1

I'd like to get rid of the default/utun0 route. When using route with the -ifscope modifier, I get the following error:

$ sudo route delete -ifscope utun0 -net 0.0.0.0
route: writing to routing socket: not in table
delete net 0.0.0.0: not in table

What am I doing wrong? What's the correct syntax of the route command in order to delete the default route?

• mac-osx
• route

asked

• 1

Before doing this. Keep in mind that it is a dangerous command if you are accessing your server online ! ;)

– eVoxmusic

Commented May 16, 2012 at 11:40

• 1

Telling the VPN clinet not to create the route sounds a lot cleaner to me. The native pptp client can be configured like this. Are you using a different client?

– Nitz

Commented Aug 13, 2014 at 8:04

• In macOS Monterey the following is working: sudo route delete -ifscope utun0 default.

– Jaime Hablutzel

Commented Jan 18, 2022 at 3:23

5 Answers

                                5

9

I know it's late, but I'd like to know what kind of VPN you're using.

I've had this problem with Cisco Anyconnect VPN.

Not seeing the same error as you, but the command would appear to execute, but the routing table would still look the same.

I believe Cisco AnyConnect locks the routing table in some way so that it cannot be modified.

If this isn't Cisco AnyConnect, it may do something similar. I haven't found any documentation on it, but that's the conclusion I've come to from my testing.

I've found this also appears to apply on Windows.

Cheers, Aaron

answered

• It's Cisco. Our network topology changed, so I cannot verify the answers.

– mgryszko

Commented Nov 12, 2014 at 7:12

8

$ sudo route delete -net 0.0.0.0 -ifp ppp0
delete net 0.0.0.0

This is documented in route(8)

answered

3

You can try this:

sudo route delete -net default utun0

answered

1

Not in front of a Mac right now, off the top of my head try;

sudo route del default dev utun0

answered

• Sorry, but it's not working. I tried also with sudo route delete default -ifscope utun0, but still without success

– mgryszko

Commented May 16, 2012 at 12:06

1

Try route del default wlp2s0. Where wlp2s0 is the interface name. This command deletes the first default gateway on the specific interface you provide to the command.

answered

• Yes. Downvotes again for no reason, no explanation, just a downvote !!

– 3bdalla

Commented Jan 29, 2015 at 21:09

• Try adding an explanation of exactly what your answer does and why you believe it will solve the problem.

– fukawi2

Commented Jan 30, 2015 at 5:52

• You have a good point, although does not promote to be a downvote. I updated my answer.

– 3bdalla

Commented Jan 30, 2015 at 11:29

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