monitor unreacheble routes installed by babel
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
lemmi bf787efb49 migrate to modules 11 months ago
.gitignore init 2 years ago Readme: correct receive buffer section 2 years ago
go.mod migrate to modules 11 months ago
go.sum migrate to modules 11 months ago
main.go remove pointers to net.IPNet 2 years ago


rmon monitors unreachable routes installed by babeld.

Does not need any special permissions to run.


install & run

$ git clone
$ cd rmon
$ go get -v
$ go run .

open webbrowser



babeld can spew out massive amounts of route changes that can fill the netlink socket. rmon tries to allocate a 16MB receive buffer, which seems to be enough for the moment. For this to work check /proc/sys/net/core/rmem_max to be more than 16MB (16777216).

Set receive buffer size temporarily

Do one of the following:

# echo 16777216 > /proc/sys/net/core/rmem_max
# sysctl -w net.core.rmem_max=16777216

Set receive buffer pemanently

Add the following line to /etc/sysctl.conf:

net.core.rmem_max = 16777216

and run

# sysctl -p