Hi all,

With SystemD, how can I make certain service dependent on certain network 
interfaces being up?

For example, I have an 802.1ad bond interface I need to wait on for being up 
(this interface has no ip address assigned, it is used to capture networks 
packets with a tcpdump’s script). Every time this service fails because bond 
interface is not up.



I have configured the service as:



[Unit]

Description=tcpdump capture script

After=network.target

Wants=network-online.target



But it doesn’t work …. Any tip or trick?



My host is CentOS8 x86_64.


Regards,
C. L. Martinez

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