TheCloud/BindToInterface
1
0
Fork 0
mirror of https://github.com/JsBergbau/BindToInterface.git synced 2025-09-09 12:09:19 -04:00
Code Issues Packages Projects Releases Wiki Activity

Added instructions for physical NICs

Browse Source
This commit is contained in:
JsBergbau 2022-11-16 16:19:54 +01:00 committed by GitHub
parent 4b03914601
commit 5852a51506
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
README.md
View File

@ -22,6 +22,12 @@ Configuration and usage of bind to interface is very simple. Example of how to r
Instead of specifying the parameters in the same line you could also export them like `export DNS_OVERRIDE_IP=8.8.8.8`. In this case interface ovpn is a VPN provider but configured via option `route-nopull`,
so your internet traffic still goes via your normal internet connection without VPN.
### Multiple physical NICs
When using BindToInterface with OpenVPN and `route-nopull` option everything works as expected, even though `ip route` does only show the local subnet rules like `10.8.0.0/16 dev ovpn proto kernel scope link src 10.8.0.12`.
However when using pyhsical interfaces, kernel needs to know your gateway for the pyhsical interfaces. So when using like `BIND_INTERFACE=eth1 DNS_OVERRIDE_IP=8.8.8.8 LD_PRELOAD=./bindToInterface.so curl 34.160.111.145 -H "Host: ifconfig.me"` and you get an error "No route to host" then you need to add a route for your second NIC. You can to this with a higher metric, so this route is not used by default, but only with BindToInterface like `sudo ip route add default via 192.168.194.1 metric 500`. A route without a metric has metric `0` meaning highest metric, see https://unix.stackexchange.com/a/431839
### Specifying absolute path
Especially when using more complex scripts or programs, that use another working directory than the current one, you have to specify the absolute path to `bindToInterface.so`, otherwise an error message will be printed, that it couldn't be loaded. Example when bindToInterface.so is located at `/opt/bindToInterface/bindToInterface.so`: `BIND_INTERFACE=ovpn DNS_OVERRIDE_IP=8.8.8.8 LD_PRELOAD=/opt/bindToInterface/bindToInterface.so curl ifconfig.me`